Chemistry Lab 14 Types Of Chemical Reactions Answers



A chemical equation is a shorthand description of a chemical reaction. At this point, it is worth thinking about what a chemical reaction is, exactly, what processes are not chemical reactions, how chemical reactions occur, and how they are characterized (we will return to reaction behaviors in greater detail in chapter 8). Use the code below to classify each reaction. Title - Physical & Chemical Reactions By - Charlotte McCoy Primary Subject - Science Secondary. Based upon the solubility rules (see the lab manual page 13), a reaction can be. Purpose: To view the actual chemical reactions, write the correct balanced chemical equation, and type of chemical reaction. H2SO4 ( 1 (NH4)2SO4. For each reaction equation: 1. Purpose: The purpose of this lab is to further observe four types of chemical reactions. To determine the percent yield of a product in a chemical reaction we need to know the amount of all reactants used, the amount of the product formed and the balanced chemical reaction. 2H 2(g) + O 2(g) → 2H 2O(l) Chemical equations give the following information about chemical reactions. Such reactions are of central importance to numerous natural and technological processes, ranging from the chemical transformations that take place within cells and the lakes and oceans, to the industrial-scale production of fertilizers, pharmaceuticals, and other. These visible changes are called the indicators of a chemical reaction. I expect that most high school chemistry teachers assign some type of laboratory related to types of chemical reactions including synthesis, decomposition, single replacement and double replacement reactions. Aqueous titrations: Acid-base titrations. An iodine clock reaction that gives a colorless to black result similar to that of the familiar Landolt iodate-bisulfite clock reaction is described. Nucleic acid ANSWER: Allows organisms to transfer genetic information info Fomites one generation to the next 2. Introduction to General Chemistry I Laboratory General Chemistry I Laboratory (CHM151L) is designed to be taken by students enrolled in Measuring the speed of a chemical reaction (Experiment 3. Post-Lab Questions. Chemical-Reactions. It started as the IrYdium Project's Virtual Lab. 5 years ago | 1. Combination Reaction a. by Theresa Knapp Holtzclaw. In chemistry, chemical and physical changes are used to help scientists understand how different substances react given various circumstances. The light-dependent reactions convert energy from the sun into a form that the chloroplast can then use to make sugar from carbon dioxide, in the process producing oxygen as a waste product. 1 Reactions and Equations In your textbook, read about evidence of chemical reactions. - Finish Worksheet, "Practice Problems on Net Ionic Equations" (*ANSWERS) **PRINT copy of LAB (below)- Types of Chemical Reactions (* For Wednesday, Oct. Study your lab assignment before you come to the lab. 3 Pb + 2 H 3 PO 4 3 H 2 + Pb 3 (PO 4) 2 single displacement 5. 1 3 4 balancing equations notes ic 1 5 6 balancing chemical equations worksheet hw 1 chemical reactions pre lab hw 2 types of chemical reactions lab ic 3 7 8 type of chemical reaction notes ic 3 9 10 types of chemical reactions hw. one element replaces a second element in a compound. • The second law of photochemistry, the Stark-Einstein law, states that for each photon of light absorbed by a chemical system, only one molecule is activated for subsequent reaction. They learn to do mole-to-mole, as well as mole-to-mass or mass-to-mole and mass-to-mass equations. Learn about the fundamental concepts of chemistry including structure and states of matter, intermolecular forces, and reactions. Chemistry 2 experiment 1 - types of chemical reactions 1. Outline those changes in properties or changes in energy that resulted from the chemical reactions you observe. First, chemistry helps explain how the world works, principally by examining nature on the molecular scale. Lab Pre-Lab Write-up. This glossary of chemistry terms is a list of terms and definitions relevant to chemistry, including chemical laws, diagrams and formulae, laboratory tools, glassware, and equipment. chemical change - any change that results in the formation of a new chemical substance. We learn ways of representing molecules and how molecules react. 0C Mass of Calorimeter = 68. Types of chemical reactions that occur in the kitchen include; the tenderizing of meat. In a combination type of chemical reaction, magnesium and oxygen are heated and combine to make: A magnesium sulphate B manganese dioxide C magnesium oxide: 14. Visit this site to learn more about the chemical reactions in fireworks. Predict whether each of the following chemical reactions will occur. Balance the chemical equations by selecting coefficients from the pull-down menus. With the class 10 science syllabus being vast covering topics like the Periodic classification of elements, Carbon compounds, Metals and non-metals, Acids, bases and salts, and more, it is important that a student must learn all the important questions and topics. To describe chemical reactions for which electrons are transferred (oxidation-reduction reactions). Protein ANSWER: • Enzyme catalyst • Used to transport molecules • Store molecules 4. 6 kJ Which of the following statements. Give a specific example for each type of chemical reaction. Calcium carbide (CaC 2) reacts with water to. Chemical Reactions Section 9. The Copper Types of Chemical Reactions. SYNTHESIS REACTIONS. Balance the following reactions and indicate which of the six types of chemical reaction are being represented: a) 2. Chemical bonds are made or broken in order to create a new molecule. CBSE Class 10 Science Lab Manual - Types of Reactions. Complete the problems on page 10. Separation Techniques. “This work is important because large numbers reactions can be screening in a short period of time. Chemistry Questions and Answers Test your understanding with practice problems and step-by-step solutions. First, chemistry helps explain how the world works, principally by examining nature on the molecular scale. ” The Pentagon refers to it as “the pervasive menace. Note: Save your lab notebooks and reports; colleges may ask to see them before granting you credit. TYPES OF CHEMICAL REACTIONS LAB PART #2. Complete/Net Ionic Equations Wks. Such reactions are of central importance to numerous natural and technological processes, ranging from the chemical transformations that take place within cells and the lakes and oceans, to the industrial-scale production of fertilizers, pharmaceuticals, and other. Welcome! This is one of over 2,200 courses on OCW. Results and Discussion: Several types of chemical reactions were performed and observed. 2 Types of Chemical Reactions Labs 14, 15 •Small-Scale Chemistry Laboratory Manual, Lab 15 •Transparencies, T118-T120 •Lab Practical 11-1. Prudent execution of experiments requires not only sound judgment and an accurate assessment of the risks involved in the laboratory, but also the selection of appropriate work practices to reduce risk and protect the health and safety of trained laboratory personnel as well as the public and the environment. The lab for this unit is on determining the formula of a hydrate. Post-Lab Questions. Chemical Reactions Used to Generate the Gas Inside the airbag is a gas generator containing a mixture of NaN 3, KNO 3, and SiO 2. measured in miles per hour, a reaction rate is the concentration change over change in time, generally in Molarity/time Rate = [X]/ t 1. General Chemistry Lab Question 4. Start studying Chemistry Lab 12, 13,14. answer choices. 11 Solubility and pH 14. 1: The Human Body, Ch. Pre-Laboratory Assignment Week 1: Buy your lab notebook (see Lab Syllabus for specific requirements). Class 10 chemistry first chapter chemical reaction types and balancing chemical equation HANDA MATH LAB 1,810 views. Our leadership in research includes the traditional areas of physical, analytical, inorganic, and organic chemistry. Types of Chemical Reactions Name: _____ Describe the chemical reaction illustrated below each diagram:. The laws of chemical equilibrium define the direction in which a chemical reaction will proceed, as well as the quantities of reactants and products that will remain after the reaction comes to an end. _____: Explain how a person can determine what type of chemical reaction occurred. In chemistry, chemical and physical changes are used to help scientists understand how different substances react given various circumstances. types of chemical reactions study sheet molecular formula sheet stoichiometry cheat sheet cheat sheet for chemistry reaction types. 2HgO= 2Hg+O2 is an example of this type of reaction. If exposed to slight temperature or pressure increases, or mechanical shock, they can readily undergo certain types of chemical reactions such as polymerization or decomposition. Start studying Chemistry Lab 12, 13,14. You might not require more grow old to spend to go to the book foundation as well as search for them. In single displacement reactions, only one chemical species is displaced. OH 2 O OH O HF NH2 NH3 O OH O H2O OH OH NH2 O OH NH3 NH2 NH2 O H OH NH2 eO OH O OH + H2O + H O O O OH+ NH O+ NH2 OH+ NHNa ONa+. Place one small piece of chalk into a test tube. When this occurs, chemical energy can released, an exothermic reaction or chemical energy can be absorbed, an endothermic reaction. Observation – statement of fact, based on what you detect by your senses 2. Each time you enter the lab, use these safety rules as a guide. 8 Soluble Salts and pH 14. Given the stoichiometric equation for a chemical reaction, e. You can study ammonia and its reactions by reading about the compound, or experimenting with it in the lab, depending on your background in chemistry and access to equipment. MCAS_2013_Gr10_CHEM_RID ID:281323 A Common EQ 1 An equation for a chemical reaction is shown below. Chemical Change Lab Middle School. This is “Types of Chemical Reactions: Single- and Double-Displacement Reactions”, section 4. Assignment WB Page Number Score Out of Podcast 4. NCERT Class 10 Science Lab Manual Types of Reactions. Six common types of chemical reactions are: synthesis, decomposition, single-displacement, double-displacement, combustion and acid-base reactions. Types of Chemical Reaction Worksheet. nonstandard lab materials and that this is not a standard practice in a chemistry lab! Answers to Selected Questions: The answers to most questions require basic conversions. Chemistry is a physical science concerned with the composition, structure, and properties of matter, as well as the changes it undergoes during chemical reactions; it features an extensive vocabulary and a. Class 10 chemistry first chapter chemical reaction types and balancing chemical equation HANDA MATH LAB 1,810 views. A chemical equation is a shorthand description of a chemical reaction. There are several different types of chemical reactions and more than one way of classifying them. Atoms or molecules of matter interact with each other in these changes. Pre lab - answer all the questions - these can be usually found in the lab reading provided to you. 6 kJ Which of the following statements. Chemical Reactions: Type of reaction in which an element or compound reacts with oxygen. 16: LAB- Types of Chemical Reactions Review Work (*UNIT 2 TEST- Key terms/concepts to Know) Textbook questions- p. Here is the access Download Page of TYPES OF CHEMICAL REACTIONS LAB 14 ANSWER KEY. A chemical equation is a shorthand description of a chemical reaction. We look at preparation of these chemical solutions by weight (w/v) and by volume (v/v). 2 Balancing Chemical Equations Worksheets; A chemical equation is the symbol in Chemistry that represents chemical reaction with the help of chemical formulas. In this simulation, students will evaluate the energy changes in an endothermic and an exothermic chemical reaction. , 10 Examples of Chemical Reactions in Everyday Life, 2017). 0 × 10-3 M ZnC1 2. For example, your teacher may teach you things like “redox reaction” and “nuclear reaction” as types of reaction, or may just rename some of the ones that I’ve listed below. An iodine clock reaction that gives a colorless to black result similar to that of the familiar Landolt iodate-bisulfite clock reaction is described. Questions are typically answered within 1 hour. Al2(SO4)3 ( 3. (show all your works and measure that you answer all questions from part a to part d. Heating procedures: Use of Bunsen burner & hot plate (Experiments 2, 3, 5). To balance a chemical equation, enter an equation of a chemical reaction and press the Balance button. 2H₂(g) + O₂(g) → 2H₂O(g) The mole ratio between O₂ and H₂O is #(1 mol O₂)/(2 mol H₂O)#. combustion reaction - a type of chemical reaction that occurs when carbon and hydrogen compounds react with oxygen to produce carbon dioxide and water. Chemistry and Matter. A neutralization is a type of double replacement reaction. • The first law of photochemistry, the Grotthuss-Draper law, states that light must be absorbed by a compound in order for a photochemical reaction to take place. Animated Spectra A growing collection of Animated Spectra (IR, H-NMR, 13 C-NMR, MS) of common Organic Compounds (using JSmol and JSpecview). pdfsdocuments2. Pre lab - answer all the questions - these can be usually found in the lab reading provided to you. (b) Explain the purpose of drying and weighing the filter paper with the precipitate three times. The salts produced are water-soluble. Concept introduction: The acidic or basic character of a salt is estimated. The vitamin C clock reaction uses chemicals that are readily available on the retail market: vitamin C, tincture of iodine, 3% hydrogen peroxide, and laundry starch. Some questions may require the use of the 2011 Edition Reference Tables for Physical Setting/Chemistry. To examine a variety of reactions including precipitation, acid-base, gas forming, and oxidation-reduction reactions. Most Chemistry or Science courses require you to know the names of many types of chemical reactions and ask exam questions on this topic. To understand the types of reactions that occur in aqueous solutions, we must first explore the types of species present. On this page you will find information on the most common types of gases and their tests. A discussion of the chemistry of the reaction can be done by using the questions as a discussion outline. Giancoli Ch. ; Examining VSEPR through the Cross Cutting Concept of Patterns. The balanced equation will appear above. Such reactions are of central importance to numerous natural and technological processes, ranging from the chemical transformations that take place within cells and the lakes and oceans, to the industrial-scale production of fertilizers, pharmaceuticals, and other. Sometimes a teacher finds it necessary to ask questions about PE diagrams that involve actual Potential Energy values. It is sometimes called the central science because it. Part 2: Complete (where necessary) and balance the following equations. Scott Milam 2,314 views. For Chemical Kinetics I (Rate Laws): 1. Predicting Products and worksheet. Reaction Type Worksheet Free Worksheets Library from Types Of Reactions Worksheet Answer Key, source:comprar-en-internet. RE: What are 5 Physical Changes and 4 Chemical Changes in everyday life? So, we were doing experiments in class and the teacher told us to bring close toe shoes the day beforewell, i forgot and now i have to find 5 physical changes and 4 chemical changes at my house, describe the materials before and after, and record why it is a physical changeI am so confused. dialogues with colleagues in departments servicing chemistry students. Can We Write Your Essay? Ace your next assignment with help from a professional writer. A chemical equation is a shorthand description of a chemical reaction. _____: Explain how a person can determine what type of chemical reaction occurred. What are 5 types of chemical reactions? Chemistry Chemical Reactions Chemical Reactions and Equations. The videos below are SWEET. It contains reactants and products. terzocircolotermoli. Usually, what happens is the production of hydrogen at the copper electrode and the zinc electrode acquires deposits of oxides that act as a barrier between the metal and the electrolyte. 2 Types of Chemical Reactions> 13 A decomposition reaction is a chemical change in which a single compound breaks down into two or more simpler products. It is designed to help students link chemical computations with authentic laboratory chemistry. pdf FREE PDF DOWNLOAD. Rust has been called “the great destroyer” and “the evil. Lesson 14 – Types of Reactions Worksheet – Answers. It is to be contrasted with thermodynamics, which deals with the direction in which a process occurs but in itself tells nothing about its rate. CHEMICAL BONDING CONTENTS 2 Electronegativity 3 Road Map 4 Types Of Bonding 5 Properties Controlled By Chemical Bond 6 Polar Bonds 7 Metallic Bonding 8 Intermolecular Forces 9 Ions: Counting Electrons And Protons 10 Ionic And Atomic Radii 11 Ions And Energy 12 Lithium Fluoride 13 Crystal Packing 14 Crystal Packing 15 Crystal Packing 16 Covalent. 2 types of nucleic acids ANSWER: 1. 5 × 10-3 mol C1- Exercise 5 Typical blood serum is about 0. Signs that a chemical reaction has occurred. Then have students share their explanations and discuss in small groups why plastics have be-. Many chemical reactions can be classified as one of five basic types. An equilibrium constant less than one (1) suggests that the reaction prefers to stay on the side of the reactants -- in this case, water likes to stay as water. This is likewise true of enzymatically-catalyzed reactions. For each reaction equation: 1. Balancing Chemical Equations. Oxidation‐reduction reactions are some of the most important chemical reactions. Chemical Reactions - a 41 slide show ; Chemistry Lab - mass relationships accompanying chemical changes ; Doc Brown's Chemistry Clinic - reacting mass chemical calculations (not using moles) Mass Conservation - conservation of mass in chemical reactions. Similar to metathesis, complexation reactions are reactions in which elements replace each other, but in complexation. Decomposition Mg(OH)2 + heat ( MgO + H2O. You are supposed to solve/calculate/answer the questions in the template—that is what its for. Chemical Reactions: Type of reaction in which an element or compound reacts with oxygen. Calculators On-Line Center: Chemistry (Martindale's "The Reference Desk") This site includes over 14,200 chemistry related calculators for a variety of scientific disciplines. coefficient - a number in front of a chemical substance that represents the quantity needed for a reaction. Mock Data (Report Sheet) - There are 3 columns - the first one is filled out for you (observations) - the second column is to label the reaction type (single replacement, double replacement, synthesis, etc. Listen, chemicals are super awesome, and super dangerous. Complete the problems on page 10. Pre-Laboratory Assignment Week 1: Buy your lab notebook (see Lab Syllabus for specific requirements). it Subject: Download Chemistry Describing Chemical Reactions Review Answers - Describing Chemical Reactions A chemical reactionis the process by which one or more substances are changed into one or more different substances In any chemical reaction, the original substances are known as the. 5 Types of Chemical Reactions Lab with Worksheet & Answers - Duration: 6:59. 3 years ago. Chemistry is a physical science concerned with the composition, structure, and properties of matter , as well as the changes it undergoes during chemical reactions. chemistry practical class 10 Types of Reactions Introduction > Chemical reaction: The reaction in which two or more substances react to form a new product with new properties is called a chemical reaction. New; Balancing Chemical Equations - Duration: 14:28. The pigment turns red in acidic environments with a pH less than 7 and the pigment turns bluish-green in alkaline (basic) environments with a pH greater than 7. The Scientific Method: Experiment and Explanation. The particulate nature …. (show all your works and measure that you answer all questions from part a to part d. Check the Price Hire a Writer Get Help Reaction Balanced Chemical Reaction Sign of Chemical Reaction Type of Chemical Reaction KI(aq) + Ag(aq) → KNO3(aq) + AgI(s) KI(aq) + Ag(aq) → KNO3(aq) + AgI(s) Change…. A simple introduction to organic chemistry: nomenclature, functional groups, and some reaction types. However that does not mean you can use this packet as your main notes and write notes in the margins to supplement your learning. Chemical Thermodynamics. This chemistry lesson begins with students doing a wet lab in a bag. The conversions required in the stoichiometry problems in this quiz vary between questions. Hydrochloric acid is corrosive and can cause severe injury. Lab unveils catalyst that can break problematic C-F bonds antenna-reactor" catalysts that spur or speed up chemical reactions. About This Quiz & Worksheet. For each reaction equation: 1. 14 Organic Chemistry. Oxidation‐reduction reactions are some of the most important chemical reactions. Experiment: Types of Chemical Reaction Safety. Write word and chemical equations based on chemical reactions 36. All you have in the lab though is a 0. These include metathesis, complexation, and acid-base neutralization reactions. Get types of chemical reactions lab 14 answer key PDF file for free from our online library PDF File: types of chemical reactions lab 14 answer key. (c) In the filtrate solution, is [K +. Chemical tests transform an unknown into a different compound with an accompanying change in appearance. These kits are a time-saving option for teachers who are looking to simplify their life of lab setup and solution. 8 Soluble Salts and pH 14. , no mass isotope effects). Here is the access Download Page of TYPES OF CHEMICAL REACTIONS LAB 14 ANSWER KEY. If exposed to slight temperature or pressure increases, or mechanical shock, they can readily undergo certain types of chemical reactions such as polymerization or decomposition. Combination reactions occur when two separate reactants are bonded together, e. Class Notes Unit 2 - Introduction to Chemistry Unit 3- Properties of Substances Unit 4 - Naming Compounds Unit 5 - The Mole Concept Unit 6 - Chemical Reactions Unit 7 - Stoichiometry Unit 8 - Atoms, the Periodic Table, and Bonding Unit 9 - Solution Chemistry Unit 10 - Organic Chemistry Review and Keys to Worksheets. CHEMICAL REACTIONS OF COPPER AND PERCENT YIELD KEY Objective To gain familiarity with basic laboratory procedures, some chemistry of a typical transition element, and the concept of percent yield. Balance the following reactions and indicate which of the six types of chemical reaction are being represented: a) 2. To determine the percent yield of a product in a chemical reaction we need to know the amount of all reactants used, the amount of the product formed and the balanced chemical reaction. List the different types of chemical reactions and give a brief description. The burning of wood, wax, oil, gasoline, and coal are examples of a chemical reaction known as combustion. If you have a problem in any branch of chemistry, including General, Organic, Inorganic, Analytical, Physical and Macromolecular Chemistry, and Biochemistry, our experts will gladly offer their professional help. The mission of the Department of Chemistry at the University of Wisconsin-Madison is to conduct world-class, groundbreaking research in the chemical sciences while offering the highest quality of education to undergraduate students, graduate students, and postdoctoral associates. Ionic charges are not yet supported and will be ignored. Once you’ve mastered the material, you should be able to answer these questions without reference to your notes or textbook. 1) The study of the structure of body parts and their relationships to one another is known as a) Structurology c) Anatomy. Lab experiments and types of research often require preparation of chemical solutions in their procedure. Organic chemistry – laboratory methods 4 Safety Rules in the Organic Chemistry Laboratory 1. Zhao Greg Kerr IB Chemistry HL October 10, 2012 Aim: To observe several important types of chemical reactions and to write equations. Experiment: Types of Chemical Reaction Safety. com! A chemistry quiz on chemical reactions. 15 Inorganic Chemistry. 1: The Human Body, Ch. Experiment 2: Application Lab: The Control of Temperature in Chemical. The types of chemical reactions presented in the quiz can be categorized as one of the following reaction types: synthesis, decomposition, single replacement, double replacement or combustion. Extraction and uses of aluminium, copper, iron, titanium and tungsten. We have moved all content for this concept to for better organization. An overview of some inorganic chemistry including complexation. Single Replacement. 2 (CB 5-9) Online Demo: Types of Reactions In Class Worksheet B Pg 10-12 Lab: Small Scale Single Replacement Pg 4 100 Podcast 4. The answer is (C). zinc plus copper (ii) sulfate. and indicate which type of chemical reaction (synthesis, decomposition, single-displacement, double-displacement or combustion) is being represented:. This states that in a chemical reaction, matter can neither be created or destroyed, or more simply, the mass of the products must equal the mass of the reactants. Note: Save your lab notebooks and reports; colleges may ask to see them before granting you credit. More than one 'descriptor' word can apply to a reaction, there is an 'alphabetical keyword' list below. CP Chemistry - Sample Lab Report I. , only This is a test of your knowledge of chemistry. Most reactions require heat, pressure, radiation, other conditions, and/or the presence of accelerators (catalysts). Experiment 2: Application Lab: The Control of Temperature in Chemical. Combustion: 2C 4 H 6 + 11O 2 8CO 2 + 6H 2 O c. The questions are based on the Redox Titration Lab. You are supposed to solve/calculate/answer the questions in the template—that is what its for. Atoms or molecules of matter interact with each other in these changes. You may work out solutions to multiple-choice questions in the test booklet. Teachers: Classic Chembalancer is for students who are learning to balance equations for the first time. Student Laboratory Kits. The iodine clock reaction is a well-known and memorable chemical reaction where two colorless solutions are mixed and, after a period of time ranging from seconds to minutes, the solution suddenly turns from colorless to colored (yellow or bluish-black. electrons 5. 3HCl(aq) + Fe(OH) 3 (s) → 3H 2 O(ℓ) + FeCl 3 (aq) even though Fe(OH) 3 is not soluble. Chemistry & Chemical Reactivity 6th Ed. Most of the time, reactions of this type occur in a solution, and either an insoluble solid (precipitation reactions) or water (neutralization reactions) will be formed. Class Notes Unit 2 - Introduction to Chemistry Unit 3- Properties of Substances Unit 4 - Naming Compounds Unit 5 - The Mole Concept Unit 6 - Chemical Reactions Unit 7 - Stoichiometry Unit 8 - Atoms, the Periodic Table, and Bonding Unit 9 - Solution Chemistry Unit 10 - Organic Chemistry Review and Keys to Worksheets. Solubility Wks. Double displacement chemical reactions. Welcome to the Chemical Education Xchange (ChemEd X)! We hope to strengthen the community of chemistry educators by providing learning resources and forums for discussion and collaboration on our interactive platform. Browse through all study tools. Included you will find five pages of teacher notes that include detailed set-up instructions along with tips that will insure a successful lab. Based on the results of this lab, develop a hypothesis about the type of chemical reaction (and the predicted chemical equation) that occurs when iron filings are added to 6M hydrochloric acid. New; Balancing Chemical Equations - Duration: 14:28. Below is a list of freely available online chemistry lab resources, including general chemistry and organic chemistry simulations. For today's experiment you will classify reactions as one of the main 5 types of chemical reactions. A combination (composition) reaction is a chemical reaction that makes a single substance from two or more reactants. Played 820 times. meiosis terminology concept map answers, chemistry equations answer key chapter 10 review and reaction types worksheet answer key are some main things we want to present to you based on the post title. Using a balanced chemical equation to calculate amounts of reactants and products is called stoichiometry. Question: Zn + 2HCl → H 2 + ZnCl 2 Answer: Also known as substitution or single replacement, a single displacement reaction consists of a single element replacing one of the elements in a compound. Separation Techniques. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Bioluminescence does come in different colors, from blue through red. General Chemistry Lab Question 4. temperature change for this reaction (group work). Martin Leigh / Getty Images Good job! You completed the quiz, so you've seen examples of the different types of chemical reactions. it Subject: Download Chemistry Describing Chemical Reactions Review Answers - Describing Chemical Reactions A chemical reactionis the process by which one or more substances are changed into one or more different substances In any chemical reaction, the original substances are known as the. Be sure to include the states of matter and correct formulas. Combustion: C 6 H 10 O 3 + 7O 2 6CO 2. Explanation - Zinc is more reactive than copper. If you're ready to try another quiz, see how familiar you are with the units of measurement. Whether and How Authentic Contexts Using a Virtual Chemistry Lab Support Learning Authors report on a study with high school chemistry students using virtual lab investigations, in a 2018 issue of the Journal of Chemical Education. If we are given the reactant(s), we can use the reaction types to help us predict the products of the chemical reaction. Some questions may require the use of the 2011 Edition Reference Tables for Physical Setting/Chemistry. Tuesday February 25, 2014. Get types of chemical reactions lab 14 answer key PDF file for free from our online library PDF File: types of chemical reactions lab 14 answer key. about taking notes anymore in AP Chemistry class because of this packet. electrophiles and nucleophiles, types of organic reactions. If you have any query regarding CBSE Class 10 Science Chapter 1 Chemical Reactions and Equations Multiple Choice Questions with Answers, drop a comment below and we will get back to you at the earliest. pH of this medium is maintained at about 5. In general: K+1. A precipitate is an insoluble solid compound formed during a chemical reaction in solution (e. Download a PDF of free latest Sample questions with solutions for Class 10, Chemistry, CBSE- Chemical Reactions and Equations. Sometimes combining substances can cause a chemical reaction and bonding which creates an entirely new substance called a compound. Types of Chemical Reaction Worksheet. This liquid has a blue-violet color, but when it comes in contact with acidic substances it becomes red, while in contact with basic substances it becomes green and even yellow. General solubility rules are in Table 1 on page 437 of the text. Be sure to include the states of matter and correct formulas. Since glow sticks do use chemicals, it is not recommended to let the kids touch any of the glow liquid. Chemistry Lab Experiments Directions: Click on the"Experiment Title" link to the lab that you wish to preview. The lab for this unit is on determining the formula of a hydrate. SCH 3U0 Chemistry Web Quest: Six Major Types of Chemical Reactions. Purpose: The purpose of this lab is to further observe four types of chemical reactions. (can you explain why and how the rate depends on the stability of the intermediate?) 9. In a chemical reaction, the molecules of one substance break apart and join together with those of another substance to create a different compound (combination of molecules). For the following reaction, the overall enthalpy change is: (A) -12 kcal/mol(B) +12 kcal/mol(C) -300 kcal/mol (D) +300 kcal/mol(E) +15 kcal/mol The key here is to understand how the heat of the reaction is related to bond dissociation energy. 4 Types of Chemical Reactions. If you have a problem in any branch of chemistry, including General, Organic, Inorganic, Analytical, Physical and Macromolecular Chemistry, and Biochemistry, our experts will gladly offer their professional help. • Decomposition reactions involve only one reactant and two or more products. If any of the following questions interest you, then watching this week's videos and doing some practice problems are probably a good way to get started!. The Scientific Method: Experiment and Explanation. This is the case with the juice of the red cabbage. Post-Lab Questions. In Chapter 5 "Introduction to Chemical Reactions", you learned to balance chemical equations by comparing the numbers of each type of atom in the reactants and products. 0:05 [Read. (show all your works and measure that you answer all questions from part a to part d. Balance Each Of The Following Chemical Equations And Identify The Reaction Type. There are several different types of chemical reactions and more than one way of classifying them. Animated Spectra A growing collection of Animated Spectra (IR, H-NMR, 13 C-NMR, MS) of common Organic Compounds (using JSmol and JSpecview). Can We Write Your Essay? Ace your next assignment with help from a professional writer. The 27 Most Impressive Chemical Reactions. Chemical reactions involve the movement of electrons, leading to the formation and breaking of chemical bonds. 9603 Chemical Equilibrium The study of a large number of chemical reactions reveals that most do not go to true completion. Many chemical reactions can be classified. 2 Balancing Chemical Equations Worksheets; A chemical equation is the symbol in Chemistry that represents chemical reaction with the help of chemical formulas. MgO Type of. There are several indicators of reaction: Co lo ur Ch an ge. Al(OH)3 Type of reaction: double displacement. 104 • Activity 1: Testing for the Presence of Nutrients. Free proofreading and copy-editing included. Whether and How Authentic Contexts Using a Virtual Chemistry Lab Support Learning Authors report on a study with high school chemistry students using virtual lab investigations, in a 2018 issue of the Journal of Chemical Education. Balance the following reactions and indicate which of the six types of chemical reaction are being represented: a) 2. Calculating the Percent Yield of Alum. Thermodynamics is time's arrow, while chemical kinetics is time's clock. This is “Types of Chemical Reactions: Single- and Double-Displacement Reactions”, section 4. These NCERT Solutions are crafted as per the latest CBSE syllabus 2019-20 by subject experts at BYJU'S. 20:2 The "Laws" and Principles of Chemical Reactions. NCERT Class 10 Science Lab Manual Types of Reactions. Carboxylic Acid Esterification. To do this, we'll even think about "how many" of a molecule we have using a quantity called a "mole". Questions are typically answered within 1 hour. New; Balancing Chemical Equations - Duration: 14:28. You will have a test on this unit tomorrow. Connection to Business: Businesses utilize many types of chemical reactions to produce, maintain, and sterilize their product or to prevent pollution. Chemical kinetics, the branch of physical chemistry that is concerned with understanding the rates of chemical reactions. Safety in the Laboratory 1. Chemical waste is a significant source of pollution, and reducing the amount of resulting waste through green chemistry while accelerating chemical reactions is an exciting challenge for innovators like Cooks. In this experiment we are using Hydrogen peroxide (the substrate for this experiment) is. The color is based on the chemistry, which involves the substrate molecule luciferin, which releases energy as it is oxidized in a chemical reaction that is facilitated by the protein luciferase. Answer: In decomposition reactions, a single reactant is broken down into two or more products. The more common types of chemical reactions are as follows: Combination Decomposition Single displacement Double displacement Combustion Redox See also Collision Theory: How Chemical Reactions Occur. As a chemistry tutor in Cambridge, I am well equipped to break it down for you. The Types of Chemical Reactions Lab is a great way to end your chemical reactions unit. chemical reaction: Interaction of two or more chemicals that produces one or more new chemical compounds, or alters the properties of the mixed chemicals. nucleotide 21. of Chemistry – Lecture Demonstrations Light and Electron Transitions Chemiluminescence with Luminol Description: Several reactions are given which demonstrate chemiluminescent reactions with luminol. Acid-Base Reactions. The questions should be answered on a separate (new) page of your lab notebook. Materials Mossy zinc Copper wire Magnesium ribbon Copper II carbonate 6 M HCl 1 M CuSO 4. CBSE Class 10 Science Lab Manual - Types of Reactions. Make sure the equations are properly balanced. 600g Temperature of empty Calorimeter = 21. 13 Nuclear Chemistry. Place the. There may be more than one molecule of product in the balanced chemical equation, but there is only one substance produced. Covers the formation and reactions of alkyl halides, including the S N 1 reaction, S N 2 reaction, E1 reaction, and E2 reaction Test: Stereochemistry Covers stereochemical concepts such as R/S and D/L classification, as well as the relationships between enantiomers, diastereomers, and meso compounds. Descri Time & Day Of Lecture Be The Following Symbols Used When Writing Chemical Equations Aq 2. The reactions of photosynthesis can be divided into two major types: light-dependent reactions and light-independent reactions. Welcome to Chemistry Matters – a new digital series for high school chemistry from Georgia Public Broadcasting! The series is comprised of 12 units of study divided into segments. 405-6, Problems #33, 34, 36, 37, 39, 41, 53, 55 key Quiz #2-1 PRACTICE: Types of Chemical Reactions For each of the following questions or statements, select the most appropriate response and click its letter: Your answers are highlighted below. types of reactions that occur among these substances. The sparks suddenly make the fire turn on and after turning it on, and after turning it on we regulate the oxygen making the fire blue or yellowish orange. Chemical Reaction Calculator Added Oct 14, 2012 by revolutionize my mind in Chemistry Calculator designed to balance chemical equations with results of: the balanced equation, word equation, and how it happened. What volume of blood contains 1. A tomato smells rotten. Chemical Reactions Andequations Lab Manual Answers chemical reactions andequations lab manual answers, many people in addition to will infatuation to buy the photo album sooner But, sometimes it is fittingly in the distance mannerism to acquire the book, even in additional country or city So, to ease you in. 1 3 4 balancing equations notes ic 1 5 6 balancing chemical equations worksheet hw 1 chemical reactions pre lab hw 2 types of chemical reactions lab ic 3 7 8 type of chemical reaction notes ic 3 9 10 types of chemical reactions hw. Most kids love glow-in the dark things. 2 •Core Teaching Resources, Section 11. It is fundamental to all of chemistry, and it is essential that you understand the stroichiometry and are able to apply it to numbers of moles and masses in chemical reactions. copper (ii) carbonate to form copper (ii) oxide and carbon dioxide (Single Replacement) 4. In any given chemical reaction, the reactants undergo chemical changes and combine to form different products. Chemical Reactions lab 4 6 REACTION TABLE: Write a balanced chemical equation for each of these reactions. For each reaction, identify the type of reaction taking place. IGCSE Chemistry revision notes made for the CIE exam boards. I can determine if mass is conserved for a reaction. C5H9O + 27. In other words, bonds break between the reactants, and atoms rearrange to form new chemical bonds. You might not require more grow old to spend to go to the book foundation as well as search for them. Mock Data (Report Sheet) - There are 3 columns - the first one is filled out for you (observations) - the second column is to label the reaction type (single replacement, double replacement, synthesis, etc. The sequence begins with copper metal and ends with copper metal, so it is called a cycle of copper reactions. Combination Reaction a. Separation of Components of a Mixture. 7 Review Sheet - Answers. In a decomposition reaction, a compound breaks down into simpler elements or compounds. Based upon the solubility rules (see the lab manual page 13), a reaction can be. More information and offline downloads. Under each segment you will find support materials designed to enhance student understanding of the content. Which Elements, When In Their Pure State, Are Written Diatomically? 3. Descriptive chemistry. The salts produced are water-soluble. List the different types of chemical reactions and give a brief description. If you're still a bit shaky on how to tell the types of reactions apart or if you just want more examples, you can review the main reaction types. Chemical-Reactions. Qualitative Analysis of Anions Pre-Lab Assignment Before coming to lab: • Read the lab thoroughly. 10 Chemistry Here is the Grade 10 Chemistry Lab on Types of Reactions that we did before the break. Mock Data (Report Sheet) - There are 3 columns - the first one is filled out for you (observations) - the second column is to label the reaction type (single replacement, double replacement, synthesis, etc. 405-6, Problems #33, 34, 36, 37, 39, 41, 53, 55 key Quiz #2-1 PRACTICE: Types of Chemical Reactions For each of the following questions or statements, select the most appropriate response and click its letter: Your answers are highlighted below. General Aspects of Chemical Reactions and Equations, 68 General Properties of Aqueous Solutions, 69 Precipitation Reactions, 70 Oxidation–Reduction Reactions, 71 Coordination Compounds, 75 Acid–Base Reactions, 76 Experimental, 80 Common Mistakes to Avoid, 80 Review Questions, 81 Answers and Explanations, 83 Free-response Questions, 84. 3 years ago. Introductory Information. C an endothermic reaction: 12. Types of Reaction Worksheet: Practice your six types of reaction. Stoichiometry - COMBINATIONS OF ELEMENTS AND THEIR REACTIONS: Study chemical reactions by reading sections on stoichiometry in chemistry text books and demonstrating them with laboratory experiments. The following equation describes the burning of hydrogen gas to form liquid water. ) Given and Needed Units. 21:1 Types of Chemical Reactions. In other words, bonds break between the reactants, and atoms rearrange to form new chemical bonds. Al (s) + CL(g) → AICI, (s). The color is based on the chemistry, which involves the substrate molecule luciferin, which releases energy as it is oxidized in a chemical reaction that is facilitated by the protein luciferase. A: There are 4 main different types of reactions, decomposition (with one reactant forming two or more products), synthesis (with two or more reactants forming one product), single replacement (with one single-element reactant and one double-element reactant forming another single-element product and another double-element product) and double replacement (with two reactants switching + ions to get two products). Pre-lab Discussion. Chemical Reactions :: Chemistry Quiz Activities free online help Info Page: 7 > 13 years: Experiments with Chemical Reactions: Chemistry Quiz Activities Answer questions related to experiments with chemical reactions view theory: 7 > 13 years. it Subject: Download Chemistry Describing Chemical Reactions Review Answers - Describing Chemical Reactions A chemical reactionis the process by which one or more substances are changed into one or more different substances In any chemical reaction, the original substances are known as the. For example, your teacher may teach you things like “redox reaction” and “nuclear reaction” as types of reaction, or may just rename some of the ones that I’ve listed below. Place one small piece of chalk into a test tube. It is designed to help students link chemical computations with authentic laboratory chemistry. This is a simple, easy-to-follow, one page worksheet that contains 18 chemical reactions to be balanced and classified according to type. The glossary below cites definitions to know when your work calls for making these and the most accurate molar solutions. + Na3P04(aq). 1 3 4 balancing equations notes ic 1 5 6 balancing chemical equations worksheet hw 1 chemical reactions pre lab hw 2 types of chemical reactions lab ic 3 7 8 type of chemical reaction notes ic 3 9 10 types of chemical reactions hw. View Notes - 14- Types of Chemical Reactions LAB from SCIENCE Chemistry at Bridgewater Raritan Regional High School. Browse through all study tools. However, sometimes there is no chemical reaction or bonding. Class Notes Unit 2 - Introduction to Chemistry Unit 3- Properties of Substances Unit 4 - Naming Compounds Unit 5 - The Mole Concept Unit 6 - Chemical Reactions Unit 7 - Stoichiometry Unit 8 - Atoms, the Periodic Table, and Bonding Unit 9 - Solution Chemistry Unit 10 - Organic Chemistry Review and Keys to Worksheets. Can We Write Your Essay? Ace your next assignment with help from a professional writer. it Subject: Download Chemistry Describing Chemical Reactions Review Answers - Describing Chemical Reactions A chemical reactionis the process by which one or more substances are changed into one or more different substances In any chemical reaction, the original substances are known as the. Rice University engineers have created a light-powered catalyst that can break the strong chemical bonds in fluorocarbons, a group of synthetic materials that includes persistent environmental pollutants. All students are resposible for the tidiness of their work environment. For the first few reactions, the type of reaction is listed, you should predict the products, then balance. Have fun and good luck!. If applicable (ie: if you classified it as a precipitation reaction) include the net ionic equation as well. In this simulation, students will evaluate the energy changes in an endothermic and an exothermic chemical reaction. amino acid 22. Which Elements, When In Their Pure State, Are Written Diatomically? 3. Introduction Chemical Equilibrium No chemical reaction goes to completion. Types of Chemical Reaction Worksheet. General solubility rules are in Table 1 on page 437 of the text. For each reaction equation: 1. Concept introduction: The acidic or basic character of a salt is estimated. 44 minutes ago. Class Notes Unit 2 - Introduction to Chemistry Unit 3- Properties of Substances Unit 4 - Naming Compounds Unit 5 - The Mole Concept Unit 6 - Chemical Reactions Unit 7 - Stoichiometry Unit 8 - Atoms, the Periodic Table, and Bonding Unit 9 - Solution Chemistry Unit 10 - Organic Chemistry Review and Keys to Worksheets. We can calculate the reaction enthalpy by subtracting the sum of enthalpies of all the reactants from that of the products. Tuesday February 25, 2014. Methods of balancing chemical Up: lecture_2 Previous: Experiment and theory in Fundamental laws of chemical reactions and chemical equations. 2HgO= 2Hg+O2 is an example of this type of reaction. Experiment II-2 Physical Chemistry Laboratory The rate of the reaction can be followed by measuring the optical density of the reaction medium, namely the iodine in solution, as a function of time. Purpose: To view the actual chemical reactions, write the correct balanced chemical equation, and type of chemical reaction. Hydrochloric acid is corrosive and can cause severe injury. Each time you enter the lab, use these safety rules as a guide. MgO Type of. Check out Types of acid-base titration for more. One of the tools I've been using to teach my homeschoolers about chemical reactions is Amazing Kitchen Chemistry Projects You Can Build Yourself. 7 Reactions of Acids and Bases 14. Title: Chemical Reaction Types and Their Equations 2. Free proofreading and copy-editing included. remember the 5 types of reactions are:. (Alkanes do undergo a substitution reaction with halogens, but require activation by ultraviolet light to make the reaction proceed). A catalyst is any substance that increases the rate of a chemical reaction (by lowering the activation energy of the reaction) (Denniston, 2007). These are: (1) direct combination, or synthesis; (2) decomposition, or analysis; (3) single replacement; and (4). 104 • Activity 2: The Digestive System and Digestion. synthesis, decomposition, double displacement,single displacement, etc). It is to be contrasted with thermodynamics, which deals with the direction in which a process occurs but in itself tells nothing about its rate. Khan Academy. There may be more than one molecule of product in the balanced chemical equation, but there is only one substance produced. New; Balancing Chemical Equations - Duration: 14:28. To verify the Law of Conservation of Mass during a chemical reaction. Check the Price Hire a Writer Get Help Reaction Balanced Chemical Reaction Sign of Chemical Reaction Type of Chemical Reaction KI(aq) + Ag(aq) → KNO3(aq) + AgI(s) KI(aq) + Ag(aq) → KNO3(aq) + AgI(s) Change…. 16: LAB- Types of Chemical Reactions Review Work (*UNIT 2 TEST- Key terms/concepts to Know) Textbook questions- p. Types of Chemical Reactions Answers Balance each of the following reactions and identify each type of reaction: 1. Mock Data (Report Sheet) - There are 3 columns - the first one is filled out for you (observations) - the second column is to label the reaction type (single replacement, double replacement, synthesis, etc. For details on it (including licensing), click here. ChemCollective tutorials walk students through solving chemistry problems movies, text, and interactive tutors. When the car undergoes a head-on collision, a series of three chemical reactions occur inside the gas generator. Types Of Chemical Reactions Lab Answers Types Of Chemical Reactions Lab This is likewise one of the factors by obtaining the soft documents of this Types Of Chemical Reactions Lab Answers by online. Balance the following equations and indicate the type of reaction taking place: 1) 3. Reaction 14 (2 reactions): Calcium carbonate reacts with hydrochloric acid 1. Neutralization reactions are one type of chemical reaction that proceeds even if one reactant is not in the aqueous phase. flush the affected area with water for 2-3 minutes and notify the teacher. Khan Academy. Box 219 Batavia, IL 60510: Phone: 800-452-1261: Fax: 866-452-1436: Email: [email protected] To identify the products formed in these reactions and summarize the chemical changes in terms of balanced chemical equations and net ionic equations. Lab: Describing Chemical Reactions Introduction and Purpose In this experiment you will observe examples of the five basic types of chemical reactions. Calcium carbide (CaC 2) reacts with water to. We learn ways of representing molecules and how molecules react. 2 C8H10 + 21 O2 ( 16 CO2 + 10 H2O combustion. Chapters 20 and 21 - Chemical Reactions - back to top. Alright there're many types of reactions that there are in the world, and in class you probably list 5 main types of reactions we're going to have to know okay. types of reactions that occur among these substances. Bergmann-Sams Chemistry: Unit 4 Outline: Chemical Reactions. For each reaction equation: 1. The sequence begins with copper metal and ends with copper metal, so it is called a cycle of copper reactions. New; Balancing Chemical Equations - Duration: 14:28. of Chemistry – Lecture Demonstrations Light and Electron Transitions Chemiluminescence with Luminol Description: Several reactions are given which demonstrate chemiluminescent reactions with luminol. Types of Chemical Reactions Do atoms rearrange in predictable patterns during chemical reactions? whv? Recognizing patterns allows us to predict future behavior. Chemistry Labs. A discussion of different classifications of chemical reactions in AP® Chemistry. Make a loose wad of copper wool and place it in a crucible. Explanation - Zinc is more reactive than copper. This is likewise true of enzymatically-catalyzed reactions. If applicable (ie: if you classified it as a precipitation reaction) include the net ionic equation as well. Use that knowledge to answer all questions in this examination. 9th - 12th grade. To play it, just press the "Start Game" button above. The following are some examples of neutralization reactions to form salts. In this virtual investigation you will combine two substances and make observations before, during, and after any reaction. 201 Textbook questions- p. A chemical equation is the symbol in Chemistry that represents chemical reaction with the help of chemical formulas. Check out Types of acid-base titration for more. Organic Chemistry Reactions / Reagents is a list of the common reactions / reagents used in organic chemical reactions (including links to detailed examples). Introduction. Chemical Periodicity. Tuesday February 25, 2014. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The Virtual Lab is an online simulation of a chemistry lab. Basic Laboratory Techniques. related to types of chemical reactions pogil answer key! Types Of Reactions The. Do this "Types of Chemical Reactions Design Lab". Part 2: Complete (where necessary) and balance the following equations. Chemistry Lab Resources (for CHM 1XX and 2XX Labs): Graphs/Tables Here you can find tips about organizing your lab notebook, how to effectively create graphs and table for lab reports, places to locate protocols and property information, and how to properly cite resources. Types of Reactions Worksheet - Solutions. 6 Calculation the pH of Weak Bases 14. In faster reactions, one can measure the change in a physical property, such. "Copper-cycle" experiments are classic labs—the reactions in this lab have been optimized to make them as safe and efficient as possible. Using a balanced chemical equation to calculate amounts of reactants and products is called stoichiometry. Using Table 3. 2 Al + __ Fe2O3 ( 2 Fe + Al2O3 single replacement. A balanced chemical equation is the recipe for a reaction: it contains a list of all the reactants (the ingredients) and products (the cookies) as well as their relative proportions. of reactants and products. Write a chemical formula for the reaction in question #F below. terzocircolotermoli. Kotz, Treichel and Weaver Thomson Brookes-Cole, 2006 / ISBN: 978-0-534-99766-3 Syllabus Succeeding in a Science Class Primer Printable Periodic Table (PDF) Writing Semi-Formal Lab Reports (PDF) Lab Report Exemplar (PDF) Lab Techniques (PDF). Combustion. The iodine clock reaction is a well-known and memorable chemical reaction where two colorless solutions are mixed and, after a period of time ranging from seconds to minutes, the solution suddenly turns from colorless to colored (yellow or bluish–black. Chemistry student laboratory kits cover the major topic areas in a general chemistry class. Interpretation: The given salt solutions are to be classified as basic, acidic or neutral. A chemical equation is a shorthand description of a chemical reaction. related to types of chemical reactions pogil answer key! Types Of Reactions The. Redox reactions, as they are called, are the energy‐producing reactions in industry as well as in the body. To observe a variety of chemical reactions. douglasevansace_86565. - 4 Types of Chemical Reactions - note/handout - study for tomorrows chemical equations and balancing equations test (you may use your Periodic Table with common ions, multivalents and polyatomics on it) Wed Nov 25 - Chemical Equations & Balancing Equations Test - Finish: Types of Chemical Reactions worksheet 6. Start studying Chemistry Lab 12, 13,14. CARTOON CHEMISTRY Types of Chemical Reactions Name: _____ Describe the chemical reaction illustrated below each diagram:. Types Of Chemical Reactions Lab Answers Types Of Chemical Reactions Lab This is likewise one of the factors by obtaining the soft documents of this Types Of Chemical Reactions Lab Answers by online. C5H9O + 27. Chemical-Reactions. In this module, we will consider and provide some context for a few categories of reactions, specifically: synthesis, decomposition, single replacement, double replacement, REDOX (including combustion), and acid-base reactions. , turn red litmus paper blue), react with acids to form salts, promote certain chemical reactions (base catalysis), accept protons from any proton donor or contain completely or partially displaceable OH. The following equation describes the burning of hydrogen gas to form liquid water. Carboxylic Acid Esterification. 13 Acid Base Titrations 15. Please read - These demos and simulations are free for chemistry educators. You can also get complete NCERT solutions and Sample papers. 1qcqy8z7zk 5d1virhmhqr0 v92g2jghdls7jw2 625tqyapw0 5u8zfkrum9 uyjug04xvvh7 bwibotxkeo39cm bj5lrsu33arg na2iefi20q12ze 3kdypdkvfbe lyo43zjfqalo8r 82cpveopwc9rzx 6hto0zk93vod49g 1g8rz5zjf6ebv 0pf3l7uz7m3i usrlobzpiuokr09 yuvqqugknjpq2z r3dbseha6rr fdq81w76cwu7 4xhsqre7ut 7firt965lp0 nvratwonsnyzk tff6e9wny9uex4 ycpjkx2j5f45 o44me0tegdii5q1 qvjy6409jyzmqi