Name: Block : Date: (Textbook Chapter 9.4) Rate of reaction or reaction rate is how quickly or slowly reactants turn into products.
|
|
- Myron Kelley
- 5 years ago
- Views:
Transcription
1 Science 10: Chemistry! Factors Affecting Reaction Rates (Textbook Chapter 94) Rate of reaction or reaction rate is how quickly or slowly reactants turn into products reaction rate = A slow reaction has a reaction rate A fast reaction has a reaction rate Example: Example: A rusting bicycle chain, which is the oxidation of iron Burning wood, which is combustion of a hydrocarbon Every chemical reaction proceeds at a definite rate, but we can speed up or slow down a reaction rate *Side note Kinetic Molecular Theory (KMT) The kinetic molecular theory explains that particles in matter are in constant motion These particles move constantly in random directions Kinetic energy is the energy of a particle or an object due to its motion When particles collide, energy is transferred between them There are four main factors that affect the movement of the particles and therefore the reaction rate TEMPERATURE Temperature is a measure of the temperature in a substance the temperature Example: How do you change the reaction rate of food breaking down into smaller components? Reactant particles move, which causes between particles and more energy and an increase in reaction rate Reactant particles move, which causes between particles and less energy and a decrease in reaction rate 1
2 EXPERIMENT - temperature Given the following materials and method, formulate a testable hypothesis to quantitatively show how a cold, medium and hot temperature will affect the reaction rate Hypothesis: (Write an If then because statement) Two 400 ml beakers Thermometer Ice water Hot water 3 Alka Seltzer tablets Stopwatch Method: 1 Fill one beaker with ice water Fill the second beaker with very hot water Use a thermometer to measure the temperature in each beaker Record the temperatures 2 Drop an effervescent tablet into each beaker at the same time Observe Use a stopwatch to measure how many seconds it takes for each tablet to finish dissolving Record the times Dispose of beaker contents down the sink 3 Fill one of the beakers with a mixture of hot water and ice water Adjust the temperature by adding more warm or cool water until the temperature is halfway between the temperatures recorded in step 1 4 Make a prediction of the length of time it will take for an effervescent tablet to finish dissolving Record your prediction 5 Add a tablet to the water that is at a middle temperature Observe and record the time it takes to dissolve Dispose of beaker contents down the sink Data Table: Alka Seltzer tablet + hot water Alka Seltzer tablet + ice water Water Temp ( C) Mass of Tablet (g) Reaction Time (s) Reaction Rate (g/s) Prediction: How long will the tablet take to dissolve in the medium temperature water? Alka Seltzer tablet + medium water Conclusion: An in temperature caused the reaction rate to 2
3 2 CONCENTRATION Concentration is how much solute (usually solid) is dissolved in a solution (liquid) the concentration the concentration Example: At which point during the school day are you MORE likely to bump into someone? Why? A higher concentration of particles means there will be with other particles so the reaction rate increases A lower concentration of particles means there will be with other particles so the reaction rate decreases EXPERIMENT - concentration Given the following materials and method, formulate a testable hypothesis to quantitatively show how changing the concentration will affect the reaction rate Hypothesis: (Write an If then because statement) 2 small test tubes Test tube rack Method: 2 ml of concentrated (30M) hydrochloric acid 2 ml of diluted (05 M) hydrochloric acid 2 equal size small pieces of magnesium strips 1 Place the two test tubes in the test tube rack 2 Fill one test tube with dilute hydrochloric acid to a depth of about 2cm (2mL) 3 Fill the second test tube with the concentrated hydrochloric acid to a depth of about 2cm (2mL) 4 Simultaneously, place equal sized strips of magnesium in each test tube 5 Time the length of the reaction in each test tube and record your results Stop timing when there are no longer bubbles being formed in the tube and/or when the magnesium strip is no longer visible (whichever comes first) 6 Clean up and put away the equipment you have used Follow your teacher s instructions for disposal of wastes 3
4 Data Table: Concentration of Reaction Rate (g/s) Mass of Mg (g) Reaction Time (s) HCl (M) Mg strip + 2 ml diluted HCl g Powdered CaCO ml concentrated HCl g Conclusion: An in concentration caused the reaction rate to 3 SURFACE AREA Surface area is how much area of an object is What kind of solid has the fastest reaction rate? the surface area the surface area Example: How do you change the reaction rate of burning wood? In the same amount of time, can collide with molecules of wood In the same amount of time, can collide with molecules of wood EXPERIMENT surface area Given the following materials and method, formulate a testable hypothesis to quantitatively show how changing the surface area will affect the reaction rate Hypothesis: (Write an If then because statement) Mortar and pestle 4 small test tubes Test tube rack 4 ml (total) of 10 M hydrochloric acid Solid pieces of calcium carbonate 4
5 Method: 1 Use the pestle to grind some calcium carbonate lumps into a fine powder in the mortar Place the four test tubes in the test tube rack 2 Place lumps of calcium carbonate into one of the test tubes to a depth of about 1 cm Place some finely ground calcium carbonate into a second test tube to a depth of about 1 cm 3 Measure dilute hydrochloric acid solution into the two remaining test tubes to a depth of about 2 cm 4 Simultaneously, pour the dilute HCl solution into each of the test tubes containing calcium carbonate Observe Note which reaction was faster 5 Clean up and put away the equipment you have used Follow your teacher s instructions for disposal of wastes Data Table: Mass of CaCO 3 (g) Reaction Time (s) Reaction Rate (g/s) Pieces of CaCO ml HCl Powdered CaCO ml HCl 156 g 156 g Conclusion: An in surface area caused the reaction rate to 4 PRESENCE OF A CATALYST A catalyst is a substance that increases the rate of a chemical reaction in the chemical reaction A catalyst is usually not written in the chemical equation of a reaction An is a biological catalyst Example: Saliva contains amylase that breaks down starch a catalyst a catalyst Catalysts do NOT create collisions between particles, they make better geometry for reactions to occur is needed to break old bonds and form new bonds in any chemical reaction We can increase the reaction rate by the amount of energy needed to break chemical bonds Catalysts allow reactions to occur with than what would be needed to break old chemical bonds and form new chemical bonds 5
6 TEACHER DEMO Given the following, formulate a testable hypothesis to qualitatively show how the presence of a catalyst will affect the reaction rate Hypothesis: (Write an If then because statement) 100mL graduated cylinder Collection tray Dish soap potassium iodide (KI) 6% hydrogen peroxide (H 2 O 2 ) Word Equation: Hydrogen peroxide decomposes in the presence of a catalyst to Balanced Chemical Equation: H 2 O 2 à Qualitative Observations Quantitative Observations (s) H 2 O 2 + dish soap H 2 O 2 + dish soap + KI Conclusion: The presence of a catalyst caused the reaction rate to 6
Alka Seltzer Lab: Reaction rate - Factors that affect the rate of chemical reactions
Alka Seltzer Lab: Reaction rate - Factors that affect the rate of chemical reactions Materials Lead Scribe Reporter/Questioner Clean-up WRITE ALL NOTES / DATA / OBSERVATIONS ON YOUR DATA SHEET The rate
More informationFactors Affecting Rates of Reaction
Factors Affecting Rates of Reaction Name: Objectives To design short experiments to investigate and explain qualitatively using collision theory the relationship between reaction rate and temperature,
More informationLab Activity 3: Factors Affecting Reaction Rate
Chemistry 3202 Lab #3 factors affecting Reaction Rate Page 1 of 5 Lab Activity 3: Factors Affecting Reaction Rate Introduction Several factors influence how fast a reaction proceeds. In this activity,
More informationReactions that Produce Heat
Chemical Dominoes Activity 7 Reactions that Produce Heat GOALS In this activity you will: Explain the effect of particle size and use of a catalyst on reaction rate. Represent energy changes graphically.
More informationJHS Regents Chemistry Department Rates of Chemical Reactions Inquiry Investigation
Name: Date: Partner: Period: JHS Regents Chemistry Department Rates of Chemical Reactions Inquiry Investigation Introduction: According to the collision theory, the rate of a reaction depends on the frequency
More informationKinetics: Factors that Affect Rates of Chemical Reactions
Objective- Study several factors that influence chemical reaction rates, including: 1. Concentration 2. The nature of the chemical reactants 3. Area in a heterogeneous reaction 4. The temperature of the
More informationExperiment 7 Can You Slow It Down?
Experiment 7 Can You Slow It Down? OUTCOMES After completing this experiment, the student should be able to: tell which factors influence the reaction rate and how they influence the rate. change the temperature
More informationFactors in Reaction Rates
Section 6 Factors in Reaction Rates What Do You See? Learning Outcomes In this section you will Discover conditions that make a reaction proceed faster or slower. Discuss explanations for why this happens
More informationMiSP Chemical Reactions Lab Temperature L2. Plop, Plop, Fizz, Fizz... Temperature and Rate of Reaction Activity
MiSP Chemical Reactions Lab Temperature L2 Name Date Plop, Plop, Fizz, Fizz... Temperature and Rate of Reaction Activity Introduction: Problem: Alka-Seltzer in water produces carbon dioxide. It is the
More informationThe Collision Theory and Rates of Reactions. Explaining how and why factors affect reaction rates
The Collision Theory and Rates of Reactions Explaining how and why factors affect reaction rates Elephant toothpaste We are going to look at a reaction named after elephant toothpaste and you ll see why
More informationMiSP Chemical Reactions Lab Temperature L3. Plop, Plop, Fizz, Fizz... Temperature and Rate of Reaction Activity
MiSP Chemical Reactions Lab Temperature L3 Name Date Plop, Plop, Fizz, Fizz... Temperature and Rate of Reaction Activity Introduction: Problem: Alka-Seltzer in water produces carbon dioxide. It is the
More informationChapter 24. One or more substances are changed into new substances. Balanced chemical equations: have the same number of atoms on both sides.
Chapter 24 Chemical Reactions What is a chemical reaction? One or more substances are changed into new substances. Conservation of mass Mass of the products = mass of the reactants Reactants Produce Products
More informationRates of reaction and factors affecting rate
Rates of reaction and factors affecting rate Firstly, let's think about some different types of reactions and how quickly or slowly they occur. Exercise 1: Thinking about reaction rates Problem 1: Think
More informationChemical reactions. C2- Topic 5
Chemical reactions C2- Topic 5 What is a chemical reaction? A chemical reaction is a change that takes place when one or more substances (called reactants) form one or more new substances (called products)
More informationFactors that Effect Rate
Factors that Effect Rate Now that we know what has to happen for a reaction to take place (a collision between molecules with the correct orientation and minimum activation energy), let s examine what
More informationWhat does rate of reaction mean?
Junior Science What does rate of reaction mean? It is not how much of a product is made, but instead how quickly a reaction takes place. The speed of a reaction is called the rate of the reaction. What
More informationQuickly add 50 cm 3 of acid.
1 One of the instructions for an experiment reads as follows. What is the best piece of apparatus to use? Quickly add 50 cm 3 of acid. a a conical flask a a 2 student uses the apparatus shown in the diagram
More informationWhat does rate of reaction mean?
1 of 39 2 of 39 What does rate of reaction mean? 3 of 39 The speed of different chemical reactions varies hugely. Some reactions are very fast and others are very slow. The speed of a reaction is called
More informationFactors Affecting the Rate of Chemical Reactions
Factors Affecting the Rate of Chemical Reactions Textbook pages 272 281 Section 6.2 Summary Before You Read What do you already know about the speed of chemical reactions? Outline your ideas in the lines
More informationThe Atmosphere Exam questions
The Atmosphere Exam questions 2012 - Higher What substance is formed when carbon is burned in oxygen? Give the effect of this substance on moist litmus paper. The table gives the % by volume of five gases/
More informationLesson Plan Book-stacking Activity
T o g o d i r e c t l y t o a l e s s o n, c l i c k o n e o f t h e f o l l o w i n g l i n k s : B o o k - s t a c k i n g A c t i v i t y B a l l o o n A c t i v i t y H y d r o g e n G a s L a b F
More information1. Gas Reactions Page 4 2. Measuring the Speed Page 6 3. Increasing the Speed Page Making Foam Page Putting Out a Fire Page 18
P & L Johnson 2012 A foam fire extinguisher puts out fires by producing a blanket of foam that contains carbon dioxide rather than air. This smothers the fire preventing oxygen getting to the fuel. In
More informationChemical formula - tells you how many atoms of each element are in a compound example: CO 2 (carbon dioxide) has one carbon atom and two oxygen atoms
Chemical Reactions Chemical formula - tells you how many atoms of each element are in a compound example: CO 2 (carbon dioxide) has one carbon atom and two oxygen atoms 2 points Chemical Equation - a short,
More informationNCEA COLLATED QUESTIONS ON RATES OF REACTION
NCEA COLLATED QUESTIONS ON RATES OF REACTION Previously part of expired AS 90301, now part of 91166, Demonstrate understanding of chemical reactivity 2012 (91166 exam) When dilute hydrochloric acid, HCl(aq),
More information2/22/2019 NEW UNIT! Chemical Interactions. Atomic Basics #19
NEW UNIT! Chemical Interactions Atomic Basics #19 1 Vocabulary: Matter: Anything that has mass and takes up space. Atom: the smallest particle of matter. Element: A pure substance made up of only one type
More informationChapter 6, Lesson 7: Energy Changes in Chemical Reactions
Chapter 6, Lesson 7: Energy Changes in Chemical Reactions Key Concepts If two substances react and the temperature of the mixture decreases, the reaction is endothermic. If two substances react and the
More informationSigns of Chemical Reactions
Signs of Chemical Reactions Tell the difference between changes which are PHYSICAL and those which involve a CHEMICAL reaction Doing six different experiments and observing the changes which
More informationSigns of Chemical Reactions
Signs of Chemical Reactions Tell the difference between changes which are PHYSICAL and those which involve a CHEMICAL reaction Doing six different experiments and observing the changes which
More informationObservations. Direct Observations Those observations we make ourselves
Observations Direct Observations Those observations we make ourselves Indirect Observations Those observations that we figure out from direct observations Observing Milk Consumption The cafeteria is considering
More information4 Energy and Rates of Chemical Reactions
CHAPTER 14 4 and Rates of Chemical Reactions SECTION Chemical Reactions BEFORE YOU READ After you read this section, you should be able to answer these questions: How is energy involved in a chemical reaction?
More informationCollision Theory of Reaction Rates
Collision Theory of Reaction Rates If you have two reactants, they can only react if they come into contact with each other i.e. if they collide Then, they MAY react Why May? Collision alone is not enough
More informationFactors that Affect Reaction Rates
Factors that Affect Reaction Rates Preface: There are 2 kinds of reactions: Homogeneous reactions - all reactants are in the same phase (don't consider products) eg.) 3H 2(g) + N 2(g) 2NH 3(g) Ag + (aq)
More informationLesmahagow High School CfE Higher Chemistry. Chemical Changes & Structure Controlling the Rate
Lesmahagow High School CfE Higher Chemistry Chemical Changes & Structure Controlling the Rate E a Page 1 of 18 Learning Outcomes Controlling the Rate Circle a face to show how much understanding you have
More informationChapter 6 and 7 Study Guide Reactions and Bonds
Name_ Per. Block _ Multiple Choice: Chapter 6 and 7 Study Guide Reactions and Bonds 1. Copper is a good conductor of electricity because its electrons A. are positively charged B. are free to move and
More informationPhosphoric acid is made by reacting phosphate rock with sulfuric acid. Only three of the methods shown below will increase the rate of this reaction.
Q. The picture shows a lump of phosphate rock. Rob Lavinsky, irocks.com CC-BY-SA-3.0 [CC-BY-SA-3.0], via Wikimedia Commons Phosphoric acid is made by reacting phosphate rock with sulfuric acid. Only three
More informationClassifying Chemical Reactions Analyzing and Predicting Products
Classifying Chemical Reactions Analyzing and Predicting Products Background A chemical reaction is defined as any process in which one or more substances are converted into new substances with different
More informationCalcium carbonate reacts with dilute hydrochloric acid to produce the gas carbon dioxide
RATES OF REACTION High Demand Questions QUESTIONSHEET 1 Calcium carbonate reacts with dilute hydrochloric acid to produce the gas carbon dioxide. The table below gives the results from a reaction when
More informationMoles Lab Activity 1: PCU (Popcorn Counting Units)
Moles Lab Activity 1: PCU (Popcorn Counting Units) Materials: A container of each of the following: Popcorn kernels Another type of beans A large unopened bag of popcorn Kernels Balance Safety goggles
More information2. In each of the following pairs of reactions, which would have the faster reaction rate?
CHEMISTRY 12 REACTION RATES WORKSHEET 1. The following data were collected for the reaction: Zn (s) + 2HCl (aq) H 2(g) + ZnCl 2(aq) in which zinc metal was reacted with 0.200 M HCl (aq) : Time (seconds)
More informationChemical Reactions BASICS
Chemical Reactions BASICS There are 5 simple reactions in this chemistry class (but more are coming later in the year). They are synthesis, decomposition, single replacement, double replacement, and combustion.
More informationSection I: Synthesis reactions Synthesis reactions occur when two or more substances come together to form a single new substance.
TYPES OF CHEMICAL REACTIONS A Laboratory Investigation Purpose: Observe the five major types of reactions. Record observations for these reactions. Complete balanced equations for these reactions. Introduction:
More informationor a chemical change in several experimental trials.
Regular Chemistry Lab Chemical and Physical Changes. Intro: As we study matter, we base most of our classification and identification of pure substances on chemical and physical properties. A physical
More informationA STUDY OF REACTION RATES
CH095 A Study of Reaction Rates Page 1 A STUDY OF REACTION RATES Chemical reaction rates are affected by changes in concentration of the reactants and temperature. How concentration and temperature affect
More informationPhysical and Chemical change: Conservation of matter *
OpenStax-CNX module: m38711 1 Physical and Chemical change: Conservation of matter * Free High School Science Texts Project This work is produced by OpenStax-CNX and licensed under the Creative Commons
More informationPhysical & Chemical PROPERTIES
Name Test Date Hour Group Chem #4 Notebook Properties & Changes LEARNING TARGETS I can give examples of physical and chemical properties. I can give examples of physical and chemical changes. I can identify
More informationScience 1206 Core Lab #2 Chemical Reactions Page 1 of 5
Science 1206 Core Lab #2 Chemical s Page 1 of 5 Purpose : 1. To review nomenclature, balancing equations, reaction types, predicting products and evidence for chemical reactions 2. To improve observation
More informationN Goalby chemrevise.org
4.6 Rate and Extent of Chemical Change Rates of Reaction The rate of a chemical reaction can be found by measuring the amount of a reactant used or the amount of product formed over time: Rate of reaction
More informationIODINE CLOCK REACTION KINETICS
Name: Section Chemistry 104 Laboratory University of Massachusetts Boston IODINE CLOCK REACTION KINETICS PRELAB ASSIGNMENT Calculate the initial concentration of H 2 O 2 that exists immediately after mixing
More informationGummy Bear Demonstration:
Name: Unit 8: Chemical Kinetics Date: Regents Chemistry Aim: _ Do Now: a) Using your glossary, define chemical kinetics: b) Sort the phrases on the SmartBoard into the two columns below. Endothermic Rxns
More informationThe rate of a chemical reaction is the speed at which the reactants are used up or the speed at which new products are formed.
IGCSE CHEMISTRY RVISION NOTES TOPIC 7: Chemical Reactions Rates of reaction Rate is a measure of how fast a reaction goes, its speed. The rate of a chemical reaction is the speed at which the reactants
More informationHYSICAL AND CHEMICAL PROPERTIES AND PHYSIC AND CHEMICAL CHANGES
Experiment 4 Name: 15 P HYSICAL AND CHEMICAL PROPERTIES AND PHYSIC AND CHEMICAL CHANGES 13 Al e In this experiment, you will also observe physical and chemical properties and physical and chemical changes.
More informationEnthalpy Changes. Note: 1 calorie = 4.2 Joules
Enthalpy Changes All substances contain chemical energy, called enthalpy. Like any energy it is measured in Joules (previously energy was measured in Calories). When reactions happen, energy is given out
More informationCHAPTER 9: Rate of Reaction
CHAPTER 9: Rate of Reaction 9.1 Rate of Reaction 9.2 Factors Affecting Rate of Reaction 9.3 Catalysis Learning outcomes: (a) explain and use the terms: rate of reaction, activation energy and catalysis.
More informationIn this activity, you will observe and predict products for some simple
Chemistry Not Chemistry My Type Not My Type Classifying Chemical Reactions In this activity, you will observe and predict products for some simple chemical reactions. You will classify the reactions as
More informationMATTER. Chemistry is the study of matter and the changes that matter undergoes. Matter is anything that has mass and takes up space.
MATTER Chemistry is the study of matter and the changes that matter undergoes. Matter is anything that has mass and takes up space. Properties of Matter Physical Properties Can be observed without changing
More informationSTEMscopedia: PHYSICAL AND CHEMICAL PROPERTIES AND CHANGES 8P1CD
Reflect STEMscopedia: PHYSICAL AND CHEMICAL 8P1CD What do ice cream, root beer, and carbon dioxide gas have in common? Not only do these ingredients combine to make a good treat on a hot summer day, but
More informationL REACTIONS AND EQUATIONS
Experiment 7 Name: CHEMI 20 Ca L REACTIONS AND EQUATIONS In this experiment, you will observe changes that occur during chemical reactions. You will also balance the corresponding chemical equations and
More informationConcrete setting. This reaction is quite slow. It will take a couple of days for the concrete to fully harden.
10.1 Rates of reaction Fast and slow Some reactions are fast and some are slow. Look at these examples: The precipitation of silver chloride, when you mix solutions of silver nitrate and sodium chloride.
More information(g) burns according to this reaction? D) CH 4 (g) + 2O 2 (g) CO 2 (g) + 2H 2 O(l)
Name: 7171-1 - Page 1 1) In a chemical reaction, the difference between the potential energy of the products and the potential energy of the reactants is defined as the A) heat of reaction B) ionization
More informationPaper Reference. London Examinations IGCSE. Foundation Tier. Tuesday 10 November 2009 Afternoon Time: 1 hour 30 minutes
Centre No. Candidate No. Paper Reference(s) 4335/1F London Examinations IGCSE Chemistry Paper 1F Foundation Tier Tuesday 10 November 2009 Afternoon Time: 1 hour 30 minutes Materials required for examination
More informationCl 2(g) + NaCl + H 2 O. light. 2Cl. Once formed, the chlorine radical can react with the heptane as shown below: + Cl
Experiment Free Radical Chlorination of Heptane In today s experiment, you will be chlorinating n-heptane with chlorine atoms (radicals) to form monochlorination products of that alkane. You will analyze
More informationCIE Chemistry A-Level Practicals for Papers 3 and 5
CIE Chemistry A-Level Practicals for Papers 3 and 5 Rate of Reaction Disappearing cross: Change in rate of the reaction of sodium thiosulphate with hydrochloric acid as temperature is changed: Na 2 S 2
More informationLAB. FACTORS INFLUENCING ENZYME ACTIVITY
AP Biology Date LAB. FACTORS INFLUENCING ENZYME ACTIVITY Background Enzymes are biological catalysts capable of speeding up chemical reactions by lowering activation energy. One benefit of enzyme catalysts
More information10.03 Reaction Rates. 2Mg(s) + O2 (g) 2MgO(s).
10.03 Reaction Rates 1. What is required for a chemical reaction to occur? A) standard temperature and pressure B) a catalyst added to the reaction system C) effective collisions between reactant particles
More informationWhich row correctly describes the type of reaction and the energy of the reactants and products? energy of the reactants and products
1 The energy level diagram for the reaction between sodium hydrogen carbonate and dilute hydrochloric acid is shown. sodium chloride + water + carbon dioxide energy sodium hydrogen carbonate + dilute hydrochloric
More informationExperiment 8 - Chemical Changes
Experiment 8 - Chemical Changes When a chemical change occurs, the chemicals that you start with are changed into different chemicals. We know when this happens because the new chemicals have different
More informationPre-Lab Read the entire laboratory assignment. Answer all pre-lab questions before beginning the lab.
Name: Date: Pd: Lab Partner: Lab # 13: Types of Reactions, Predicting Products of Chemical Reactions Lab Accelerated Chemistry 1 Introduction: If you examine your bicycle after it has been left out in
More informationLAB # 5: Metals and Single Replacement Reactions
LAB # 5: Metals and Single Replacement Reactions Purpose: Compare different metals and their reactions with hydrochloric acid. Construct a model of oxidation and reduction in single replacement reactions.
More informationChemical Reactions and Equations
Chemical Reactions and Equations Changes and Chemical Reactions Key Concepts Why do chemical reactions always involve a change in? What is the difference between an endothermic reaction and an exothermic
More informationPhysical Change - alters the form or appearance of a substance but does not change it into a new, different substance
Chemical Reactions Physical Change - alters the form or appearance of a substance but does not change it into a new, different substance Chemical Change - forms one or more new substances with properties
More informationRates of Reaction. Question Paper. Save My Exams! The Home of Revision. Exam Board. Page 1. Score: /249. Percentage: /100
Rates of Reaction Question Paper Level Subject Exam Board Unit Topic Difficulty Level Booklet GCSE Chemistry AQA C2 Rates of Reaction Silver Level Question Paper Time Allowed: 249 minutes Score: /249 Percentage:
More informationUse this dramatic iodine clock reaction to demonstrate the effect of concentration, temperature, and a catalyst on the rate of a chemical reaction.
Clock Reaction Race Reaction Pathways SCIENTIFIC Introduction Use this dramatic iodine clock reaction to demonstrate the effect of concentration temperature and a catalyst on the rate of a chemical reaction.
More informationINTRODUCTION TO CHEMICAL REACTIONS THE COLLISION-REACTION THEORY. R. Ashby Duplication by permission only.
CH 11 TOPIC 28 EVIDENCE OF CHEMICAL REACTIONS 1 You have mastered this topic when you can: 1) describe or define these terms: chemical reaction, chemical equation, reactants, and products 2) describe a
More informationReaction Rates * Rory Adams Free High School Science Texts Project Heather Williams. 1 Introduction
OpenStax-CNX module: m35936 1 Reaction Rates * Rory Adams Free High School Science Texts Project Heather Williams This work is produced by OpenStax-CNX and licensed under the Creative Commons Attribution
More informationUNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education CHEMISTRY
Centre Number Candidate Number Name UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education CHEMISTRY 06/06 Paper 6 Alternative to Practical Candidates
More informationClassifying Chemical Reactions
1 Classifying Chemical Reactions Analyzing and Predicting Products Introduction The power of chemical reactions to transform our lives is visible all around us-in our cars, even in our bodies. Chemists
More informationChemical Reactions and Equations 10
Chemical Reactions and Equations 10 LABORATORY GOALS Observe physical and chemical properties associated with chemical changes. Give evidence for the occurrence of a chemical reaction. Write a balanced
More information91 PERCENTAGE COMPOSITION
91 PERCENTAGE COMPOSITION - sometimes called "percent composition" or "percent composition by mass" - the percentage of each element in a compound, expressed in terms of mass Example: Find the percentage
More informationINTRODUCTION TO MATTER: CLASSI F ICATION OF MATTER, PHYSICAL AND C He MICAL PROPERTIES, AND PHYSICAL AND CHEMICAL CHANGES
Experiment 3 Name: INTRODUCTION TO MATTER: 9 4 CLASSI F ICATION OF MATTER, PHYSICAL AND C He MICAL e PROPERTIES, AND PHYSICAL AND CHEMICAL CHANGES In this experiment, you will encounter various classification
More informationFactors Affecting Reaction Rate
Factors Affecting Reaction Rate Outcomes: Formulate an operational definition of reaction rate. State the collision theory. Perform a lab to identify factors that affect reaction rate. Describe, qualitatively,
More informationConcentration 0. 5 M solutions 1. 0 M solutions. Rates Fast Slow. Which factor would account for the faster reaction rate in Experiment 1?
72. Consider the following experimental results: Experiment 1 Experiment 2 2+ - - 4 2 2 4 aq Reactants Fe ( aq) + MnO4 ( aq) MnO ( aq) + H C O ( ) Temperature 20 C 40 C Concentration 0. 5 M solutions 1.
More informationFinal Review Graphs and Charts TWO Page 1 of 35
TEST NAME:Final Review Graphs and Charts TWO TEST ID:1086907 GRADE:11 Eleventh Grade 12 Twelfth Grade SUBJECT:Life and Physical Sciences TEST CATEGORY:School Assessment Final Review Graphs and Charts TWO
More informationPhase Changes: A type of Physical Change
Chemistry Ms. Ye Name Date Block Changes we observe about matter can be categorized as either a physical or chemical change: Physical Change: a change in which the Chemical Change: a change in which the
More informationCHM112 Lab Iodine Clock Reaction Part 2 Grading Rubric
Name Team Name CHM112 Lab Iodine Clock Reaction Part 2 Grading Rubric Criteria Points possible Points earned Lab Performance Printed lab handout and rubric was brought to lab 3 Initial concentrations completed
More informationPaper Reference. Sample Assessment Material Time: 2 hours
Centre No. Candidate No. Paper Reference(s) 4CH0/1C Edexcel IGCSE Chemistry Chemistry Paper 1 Sample Assessment Material Time: 2 hours Materials required for examination Nil Items included with question
More informationLAB 11: RATES & EQUILIBRIUM: REACTION RATES AND LECHATELIER S PRINCIPLE
LAB 11: RATES & EQUILIBRIUM: REACTION RATES AND LECHATELIER S PRINCIPLE PURPOSE: To observe and describe factors that affect the rate of a chemical reaction. To observe the concentration effects on a system
More informationCore practical 5: Investigate the oxidation of ethanol
Core Practical 5 Teacher sheet Core practical 5: Objective To oxidise ethanol and use heating under reflux and distillation as practical techniques Safety Wear goggles. Ethanol is flammable. Acidified
More informationUsing Single-Replacement Reactions to Compare Reactivities
Chapter 7 Chemical Reactions Investigation 7A Using Single-Replacement Reactions to Compare Reactivities Background Information In nature, elements can occur either free (uncombined with other elements)
More information5. Researching the properties of particular materials and understand why they are used for particular products.
1. The difference between a physical and chemical change. 2. How to identify whether a physical or chemical change has taken place. 3. Understand what reactants and products are. 4. Writing and understanding
More informationModule One: Introducing Chemistry. Rates of Reaction. By the end of this lesson you should be able to:
Lesson Six Aims By the end of this lesson you should be able to: describe the effects on rates of reaction of: o surface area of a solid o concentration of a solution o pressure of a gas o temperature
More informationYear 10 Chemistry Exam June 2011 Multiple Choice. Section A Multiple Choice
Year 10 Chemistry Exam June 2011 Multiple Choice Section A Multiple Choice 1 An aqueous solution is obtained when: a. a substance dissolves in any liquid b. a substance is dissolved in water c. when a
More information3. Which of the following would create a chemical change when it is added to a glass of warm milk?
Test Name: Science 8 Assessment 6 ReviewScan Test Code: 9668632 Date: Your Name: Teacher: Class Name: 1. Which step in these instructions for making scrambled eggs results in a chemical change? First,
More informationHKCEE Past Paper Questions: Part 9 Rate of Reactions Part A: Multiple Choices
HKCEE Past Paper Questions: Part 9 Rate of Reactions Part A: Multiple Choices 1. HKCEE 1996 II Q11 In an experiment, 1.6 g of sulphur are burnt completely in air to form sulphur dioxide. What volume of
More informationKEY. Chemistry Baseline Cornerstone Assessment: Part A. Experimental Design. Directions: Read the paragraph below and then respond to the questions.
Chemistry Baseline Cornerstone Assessment: Part A. Experimental Design Directions: Read the paragraph below and then respond to the questions. Hydrogen peroxide is a liquid that breaks down and releases
More informationFigure 1. Oxygen. (g) +... (g)... SO 3. The pressure of the reacting gases was increased.
Q1. Figure 1 represents a reaction in the production of sulfuric acid. Figure 1 Oxygen Sulfur dioxide Sulfur trioxide (a) Complete and balance the equation for the reaction.... SO 2 (g) +... (g)... SO
More information47 Which process best demonstrates a chemical change in distilled water?
47 Which process best demonstrates a chemical change in distilled water? A B C D Freezing the water Separating the water into its elements Calculating the water s density Dissolving sugar in the water
More informationRegents review Kinetics & equilibrium
2011-2012 1. A is most likely to occur when reactant particles collide with A) proper energy, only B) proper orientation, only C) both proper energy and proper orientation D) neither proper energy nor
More informationForm 4 Chapter 7: Acid and Bases
Form 4 Chapter 7: Acid and Bases The ph Scale Properties Acids Alkalis Physical. Substances that ionized in water to produce hydrogen ions.. Sour taste.. Turn blue litmus paper red. 4. Give a ph value
More informationCHEMISTRY 2b SUMMARY
CHEMISTRY 2b SUMMARY Items in ITALLICS are HIGHER TIER NLY C2.4.1 RATES F REACTIN Speeding up, or slowing down, chemical reactions is important in everyday life and in industry The rate of a chemical reaction
More informationUNIT 2: KINETICS RATES of Chemical Reactions (TEXT: Chap 13-pg 573)
UNIT 2: KINETICS RATES of Chemical Reactions (TEXT: Chap 13-pg 573) UNIT 2: LAB 1. A Brief Introductory Kinetics Investigation A) Set up 4 test tubes containing about 5 ml of 0.1 M sodium oxalate sol n.
More information