Lab: Chemical Reactions
|
|
- Myles Lyons
- 5 years ago
- Views:
Transcription
1 Lab: Chemical Reactions PRE-LAB: Write the chemical equations (skeleton equations) for the following. Make sure to clearly label what type of product was produced (solid, liquid, gas, or no reaction). 1. barium nitrate reacts with sodium hydroxide 2. barium nitrate reacts with sodium hydrogen carbonate 3. barium nitrate reacts with copper (II) sulfate 4. barium nitrate reacts with potassium iodide 5. barium nitrate reacts with silver nitrate 6. barium nitrate reacts with iron (III) nitrate 7. barium nitrate reacts with hydrochloric acid 8. sodium hydroxide reacts with sodium hydrogen carbonate 9. sodium hydroxide reacts with copper (II) sulfate 10. sodium hydroxide reacts with potassium iodide 11. sodium hydroxide reacts with silver nitrate 12. sodium hydroxide reacts with iron (III) nitrate 13. sodium hydroxide reacts with hydrochloric acid 14. sodium hydrogen carbonate reacts with copper (II) sulfate 1
2 15. sodium hydrogen carbonate reacts with potassium iodide 16. sodium hydrogen carbonate reacts with silver nitrate 17. sodium hydrogen carbonate reacts with iron (III) nitrate 18. sodium hydrogen carbonate reacts with hydrochloric acid 19. copper (II) sulfate reacts with potassium iodide 20. copper (II) sulfate reacts with silver nitrate 21. copper (II) sulfate reacts with iron (III) nitrate 22. copper (II) sulfate reacts with hydrochloric acid 23. potassium iodide reacts with silver nitrate 24. potassium iodide reacts with iron (III) nitrate 25. potassium iodide reacts with hydrochloric acid 26. silver nitrate reacts with iron (III) nitrate 27. silver nitrate reacts with hydrochloric acid 28. iron (III) nitrate reacts with hydrochloric acid 2
3 Objectives: Observe several typical examples of evidence that chemical change is occurring; make generalizations about the combinations of materials that result in the same evidence; practice careful laboratory techniques such as avoiding contamination of reactants, to endure that results observed are repeatable and unambiguous. You will combine the aqueous solutions (one to one) with each other in an organized manner in order to observe their interactions. Problem: What will the various aqueous solutions chemical reactions be when mixed in various combinations? Will some chemical reactions produce precipitate (solid), water (liquid), bubbles (gas) or have no reaction? Hypothesis: Chemicals can undergo chemical changes by creating heat, changing colors, forming bubbles and precipitates. You should have clearly labeled your predictions PRIOR to lab. You must show instructor prior to beginning the lab. Safety Precautions: Safety goggles and lab apron MUST be worn at all times in the Chemistry lab. Silver nitrate will stain skin and clothing. Handle with care. Wash your hands and arms thoroughly after this activity. Hydrochloric acid can be harmful if spilled on you. Be very careful with ALL chemicals! Materials: Aqueous solutions of barium nitrate, sodium hydroxide, sodium hydrogen carbonate, copper (II) sulfate, potassium iodide, silver nitrate, iron (III) nitrate, and hydrochloric acid Chem. well plate Droppers for each solution (as needed) Toothpicks 3
4 Procedure: 1. Make a chart in your lab book to record your data at least one page in your lab book. Allow room to record your observations. A sample chart will be on display on the overhead. You will have to complete the chart including all the chemicals you will use. Notice that some of the boxes in the chart are marked with X, indicating there is no need to mix those particular chemicals. Why do you suppose those particular blocks have an X? (2 pts) 2. Begin mixing with barium nitrate. Add 3 drops of barium nitrate solution to each of 7 wells of the well plate. Add 3 drops of sodium hydroxide solution to the first well. After mixing the two solutions, make notes on your chart of any changes you observe. Don t overlook any color changes, the formation of a precipitate (cloudy solution), the formation of a gas (fizzing or bubbling), or a change in temperature. 3. Using another dropper, continue by adding 3 drops of the sodium hydrogen carbonate to the second well. It is important that you do not allow the top of the dropper of one solution to come in contact with another solution. Your attention to this detail will prevent contamination of the solutions. Continue by adding copper (II) sulfate to the third well, and so on. 4. After mixing the pairs of solutions, make notes on any changes you observe. You have completed the first row of the chart. Begin the second row. Continue by putting 3 drops of sodium hydroxide into each of 7 wells and adding the other solutions. 5. Notice that adding barium nitrate to the sodium hydroxide (in the second row of the chart) produced the same results as adding sodium hydroxide to barium nitrate (in the first row of the chart). If you can explain why this is so, you can shorten the time needed for the investigation by not repeating other mixtures. After completing the entire chart in this fashion and mixing all possible one-to-one combinations of solutions, clean up your lab table and make sure all the chemicals are in the correct location. 4
5 Analysis/Conclusion: 1. Which combination of reactants seems to produce no reaction when mixed together? 2. Which combination of reactants forms a gas? Can you guess which gas is formed? Try to deduce this from the reactants names and chemical formulas. 3. Which combination of reactants produces a color change when mixed together? 4. Which combination of reactants forms precipitates quickly? Slowly? 5. Which combination of reactants forms: a. A yellow precipitate? b. A muddy brown precipitate? c. A white precipitate? d. A blue precipitate? 6. Which combination of reactants produces heat? How could you tell? 7. What evidence indicates that a chemical change is occurring? 5
6 8. Indicate if a chemical change occurred in the following situations or not: a. An acid is dissolved in water and heat is released b. A burning match produces light c. A seed crystal is placed in a supersaturated solution and the extra solute particles join the crystal and come out of the solution d. The glowing filament of a light bulb produces light e. A small piece of metal is placed into an acid and hydrogen is released f. Solutions of sodium hydroxide and copper (II) sulfate are mixed and a blue precipitate appears. 9. Anhydrous copper (II) sulfate (CuSO 4 ) is a white solid. When it is dissolved in water, the solution becomes blue. Is this a chemical change? Give an explanation. 6
What Do You Think? Investigate GOALS
Activity 2 More Chemical Changes GOALS In this activity you will: Observe several typical examples of evidence that a chemical change is occurring. Make generalizations about the combinations of materials
More informationCharacteristics of Chemical Change
Section 2 Characteristics of Chemical Change What Do You See? Learning Outcomes In this section you will Observe several typical examples of evidence that a chemical change is occurring. Make generalizations
More informationMore Chemical Changes
Activity 2 More Chemical Changes Activity 2 More Chemical Changes GOALS In this activity you will: Observe several typical examples of evidence that a chemical change is occurring. Make generalizations
More informationRelative Solubility of Transition Elements
Microscale Relative Solubility of Transition Elements The transition elements are found in periods 4, 5, and 6 between groups 2 and 13 of the periodic table. As the atomic number increases across a row
More informationReaction Types and Chemical Equations
Cool Chemistry Show Section 4 Reaction Types and Chemical Equations What Do You See? Learning Outcomes In this section you will Represent chemical changes using word equations and chemical equations. Distinguish
More informationWhat Do You Think? Investigate GOALS
Cool Chemistry Show Activity 4 Chemical Equations GOALS In this activity you will: Represent chemical changes using word equations and chemical equations. Distinguish between different classes of chemical
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 informationLab #14: Qualitative Analysis of Cations and Anions
Lab #14: Qualitative Analysis of Cations and Anions Objectives: 1. To understand the rationale and the procedure behind the separation for various cations and anions. 2. To perform qualitative analysis
More informationWhat Do You Think? Investigate GOALS
Activity 1 Chemical and Physical Changes GOALS In this activity you will: Learn to differentiate between chemical and physical changes. Make observations and cite evidence to identify changes as chemical
More informationTYPES OF CHEMICAL REACTIONS
EXPERIMENT 11 (2 Weeks) Chemistry 110 Laboratory TYPES OF CHEMICAL REACTIONS PURPOSE: The purpose of this experiment is perform, balance and classify chemical reactions based on observations. Students
More informationSeparation and Qualitative Determination of Cations
Separation and Qualitative Determination of Cations Introduction Much of laboratory chemistry is focused on the question of how much of a given substance is contained in a sample. Sometimes, however, the
More informationAP Chemistry Unit 2 Test (Chapters 3 and 4)
AP Chemistry Unit 2 Test (Chapters 3 and 4) NAME: 1. A student is assigned the task of determining the mass percent of silver in an alloy of copper and silver by dissolving a sample of the alloy in excess
More informationCHM-201 General Chemistry and Laboratory I Laboratory 4. Introduction to Chemical Reactions (based in part on Small Scale Chemistry methodology as
CHM-201 General Chemistry and Laboratory I Laboratory 4. Introduction to Chemical Reactions (based in part on Small Scale Chemistry methodology as described in Chemtrek by Stephen Thompson at Colorado
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 informationMaterials Aqueous solutions A H Micro-well plate Precipitate Lab Grid Aqueous solutions micro-pipettes Overhead transparency
Lab: Precipitate Background This lab is designed to give students considerable practice in correctly writing and naming ionic compounds. By using small-scale chemistry, students will mix together various
More informationShifts in Equilibrium: Le Châtelier s Principle
6 Shifts in Equilibrium: Le Châtelier s Principle Introduction Whenever a chemical reaction occurs, the reverse reaction can also occur. As the original reactants, on the left side of the equation, react
More informationPDFMAILER.COM Print and send PDF files as s with any application, ad-sponsored and free of charge Activity # 14.
Activity # 14 Name Purpose Date Date due Activities 10c and 10d - Performing More Examples of Chemical Reactions To perform a number of different chemical reactions, determine what the reactants and products
More informationExperiment 6 Shifts in Equilibrium: Le Châtelier s Principle
Experiment 6 Shifts in Equilibrium: Le Châtelier s Principle Introduction Whenever a chemical reaction occurs, the reverse reaction can also occur. As the original reactants, on the left side of the equation,
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 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 informationStresses Applied to Chemical Equilibrium
Stresses Applied to Chemical Equilibrium Objective Many chemical reactions do not go to completion. Rather, they come to a point of chemical equilibrium before the reactants are fully converted to products.
More informationExperiment 8 - Double Displacement Reactions
Experiment 8 - Double Displacement Reactions A double displacement reaction involves two ionic compounds that are dissolved in water. In a double displacement reaction, it appears as though the ions are
More informationChemical Equilibrium and Le Chatlier s Principle
MiraCosta College Introductory Chemistry Laboratory Chemical Equilibrium and Le Chatlier s Principle EXPERIMENTAL TASK Examine a number of chemical reaction systems at equilibrium, predict the shifts they
More informationNaming salts. Metal Acid Salt. Sodium hydroxide reacts with Hydrochloric acid to make Sodium chloride
Naming salts A salt is any compound formed by the neutralisation of an acid by a base. The name of a salt has two parts. The first part comes from the metal, metal oxide or metal carbonate. The second
More informationCHEMISTRY 130 General Chemistry I. Five White Powders & Chemical Reactivity
CHEMISTRY 130 General Chemistry I Five White Powders & Chemical Reactivity Many substances can be described as a white, powdery solid. Often, their chemical properties can be used to distinguish them.
More informationSingle Replacement Reactions
Single Replacement Reactions Name: Period: PURPOSE: To observe and practice writing down molecular, complete ionic, and net ionic equations for single replacement reactions. THEORY: Most reactions in chemistry
More informationChemical Names and Formulas
Cool Chemistry Show Activity 3 Chemical Names and Formulas GOALS In this activity you will: Predict the charges of ions of some elements. Determine the formulas of ionic compounds. Write the conventional
More informationGeneral Stoichiometry Notes STOICHIOMETRY: tells relative amts of reactants & products in a chemical reaction
General Stoichiometry Notes STOICHIOMETRY: tells relative amts of reactants & products in a chemical reaction Given an amount of a substance involved in a chemical reaction, we can figure out the amount
More informationA Visual Introduction to Ionic and Net Ionic Equations
Overview This activity explores the phenomenon of chemical precipitation and asks students to construct an atomic level model of precipitation using ionic and net ionic equations. Initially, students run
More informationflame test acidified silver nitrate solution added
1 The results of two tests on solid X are shown. test aqueous sodium hydroxide added acidified silver nitrate added observation green precipitate formed yellow precipitate formed What is X? copper(ii)
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 informationThe Eight Solution Problem Exploring Reactions of Aqueous Ionic Compounds
15 Exploring Reactions of Aqueous Ionic Compounds INTRODUCTION Your goal in this lab is to identify eight unknown solutions. You and your partner will first collect data by observing reactions between
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 informationLab- Properties of Acids and Bases. Name. PSI Chemistry
Lab- Properties of Acids and Bases PSI Chemistry Name Introduction Acids and bases are useful reagents in the chemistry laboratory and play an important role in biology and nature. What are acids and bases?
More informationEIGHT BOTTLES. H H H O Na + O Cl O H H H. Hydrated sodium ion and chloride ion
EIGHT BOTTLES 1 Chemists often do "detective work" in the lab. In order to figure out the answer to a question or to solve a mystery, chemists perform a variety of tests and analyses, then interpret the
More informationPhysical and Chemical Changes Or How Do You Know When You ve Made Something New?
Introduction Or How Do You Know When You ve Made Something New? Remember that all matter has characteristic physical and chemical properties. Matter can also undergo physical and chemical changes. How
More informationWhat Do You Think? Investigate GOALS. Part A: Precipitate Reactions
Artist as Chemist Activity 6 Paints GOALS In this activity you will: Identify and predict properties of double-replacement reactions. Observe reactions that produce precipitates. Understand how insoluble
More informationAqueous Chemical Reactions
Aqueous Chemical Reactions Introduction Many chemical reactions occur in water and therefore they are considered aqueous chemical reactions. The reagents are typically dissolved or diluted in water and
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 informationTo explore solubilities and reactivities of different metal ions. To identify ions present in unknown solutions using separation methods.
Qualitative Analysis PURPOSE To develop a separation scheme and confirmatory tests for Fe 3+, Ba 2+, and Ag + cations, and to use it to identify the ions in a sample of unknown composition. GOALS To explore
More informationIdentification of White Powders
CSI Chemistry Activity 4 Identification of White Powders GOALS In this activity you will: Create and use a flowchart to identify an unknown entity. Identify an unknown ionic compound based on an understanding
More informationForensics Lab Flame Tests
Forensics Lab Flame Tests Name Per Due Date Introduction The fundamental particles that make up the building blocks of matter are known as atoms, each of which is shown on the periodic table of the elements.
More informationSolutions: Chemical or Physical Change?
Section 1 Solutions: Chemical or Physical Change? What Do You See? Learning Outcomes In this section you will Learn to differentiate between chemical and physical changes. Make observations and cite evidence
More informationDOUBLE DISPLACEMENT REACTIONS. Double your pleasure, double your fun
DOUBLE DISPLACEMENT REACTIONS Double your pleasure, double your fun Industrial processes produce unwanted by-products. Dissolved toxic metal ions-copper, mercury, and cadmium-are common leftovers in the
More informationWhat Can Destroy a Metal?
Activity 4 What Can Destroy a Metal? GOALS In this activity you will: Use proper materials to light an LED and explain the procedure. Use the Metal Activity Series to determine which metal of a given pair
More information1 A solution contains barium ions and silver ions and one type of anion. What could the anion be? chloride only. nitrate only.
For more awesome resources, visit us at www.savemyexams.co.uk/ Identification of Ions and Gases Question Paper 2 Level IGSE Subject hemistry (0620/0971) Exam oard ambridge International Examinations (IE)
More informationClassifying Chemical Reactions: Lab Directions
Classifying Chemical Reactions: Lab Directions Please Return Background: The power of chemical reactions to transform our lives is visible all around us in our homes, in our cars, even in our bodies. Chemists
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 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 informationExperiment Six Precipitation Reactions
Experiment Six Precipitation Reactions Objective Identify the ions present in various aqueous solutions. Systematically combine solutions and identify the reactions that form precipitates and gases. Write
More informationTypes of Chemical Reactions and Predicting Products
Types of Chemical Reactions and Predicting Products Pre-Lab Discussion There are many kinds of chemical reactions and several ways to classify them. One useful method classifies reactions into four major
More informationUNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certifi cate of Secondary Education
*4839073064* UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certifi cate of Secondary Education CHEMISTRY 0620/61 Paper 6 Alternative to Practical May/June 2011 1 hour Candidates
More information1. The elements on the periodic table are arranged by increasing A) atomic weight. B) atomic number. C) valence electrons. D) mass number.
1. The elements on the periodic table are arranged by increasing A) atomic weight. B) atomic number. C) valence electrons. D) mass number. 2. Periodic law states which of the following? A) Physical and
More informationChemical Reactions: Introduction to Reaction Types
Chemical Reactions: Introduction to Reaction Types **Lab Notebook** Record observations for all of the chemical reactions carried out during the lab in your lab book. These observations should include:
More informationIdentification of Unknown Substances I Lab
Background: The basis for identification of unknown substances always hinges upon using known standards for comparison. Without knowing exactly how a known substance reacts to all tests, it would be impossible
More informationPartner: Judy 6 October An Activity Series
Partner: Judy 6 October 2011 An Activity Series Purpose: The purpose of this lab is to verify the activity series of five metals and three halogens. This can be done by reacting the metal with various
More informationLearn to do quantitative titration reactions. Observe the mole ratios of several simple chemical reactions.
CHAPTER 6 Stoichiometry of Reactions in Solution Objectives The objectives of this laboratory are to: Learn to do quantitative titration reactions. Observe the mole ratios of several simple chemical reactions.
More informationIdentification of an Unknown Compound through Mass Correlations
EXPERIMENT Identification of an Unknown Compound through Mass Correlations PURPOSE To carry out a series of decomposition reactions for five different unknown, and use stoichiometry in order to identify
More informationSection B: Some Essential Background Chemistry
Section B: Some Essential Background Chemistry Soluble and insoluble salts The importance of knowing whether a salt is soluble or insoluble in water You will remember that acids react with carbonates to
More informationAqueous Chemical Reactions
Aqueous Chemical Reactions Introduction Many chemical reactions occur in water and therefore they are considered aqueous chemical reactions. The reagents are typically dissolved or diluted in water and
More informationThe Eight Solution Problem Exploring Reactions of Aqueous Ionic Compounds
The Eight Solution Problem Exploring Reactions of Aqueous Ionic Compounds About this Lesson This activity allows students to mix a variety of known ionic solutions while making careful observations. After
More informationLaboratory 3. Development of an Equation. Objectives. Introduction
Laboratory 3 Development of an Equation Objectives Apply laboratory procedures and make observations to investigate a chemical reaction. Based on these observations, identify the pattern of reactivity
More informationChemical Names and Formulas
Cool Chemistry Show Section 3 Chemical Names and Formulas What Do You See? Learning Outcomes In this section you will Predict the charges of ions of some elements. Determine the formulas of ionic compounds.
More informationUnit 8 Chemical Reactions- Funsheets
Part A- Balancing Equations and Types of Reactions Balance AND identify the following reactions: Unit 8 Chemical Reactions- Funsheets 1) Mg + Zn(NO 3) 2 Zn Mg(NO 3) 2 2) Ba + AgNO 3 Ag + Ba(NO 3) 2 3)
More informationActivity 2 Elements and Their Properties
Activity 2 Elements and Their Properties Activity 2 Elements and Their Properties GOALS In this activity you will: Apply ancient definitions of elements to materials you believe are elements. Test some
More informationLab Section. Observations and evidence for a chemical reaction:
Experiment #3: Shifting Reactions (Adapted from Exp. I-4 from Inquiries in Chemistry, 3 rd edition) Problem Statement: How can we shift reactions forward and backward? I. Data Collections and Analysis
More informationAqueous Chemical Reactions
Aqueous Chemical Reactions Introduction Many chemical reactions occur in water and therefore they are considered aqueous chemical reactions. The reagents are typically dissolved or diluted in water and
More informationChemical reaction? Food color. Which photo shows a physical change and which shows a chemical reaction?
Chemical reactions Chemical reaction? Food color Which photo shows a physical change and which shows a chemical reaction? Starter: chemical reactions Aim 17 May 2016 By the end of this lesson I will be
More informationPart II. Cu(OH)2(s) CuO(s)
The Copper Cycle Introduction In this experiment, you will carry out a series of reactions starting with copper metal. This will give you practice handling chemical reagents and making observations. It
More informationEXPERIMENT 7 Reaction Stoichiometry and Percent Yield
EXPERIMENT 7 Reaction Stoichiometry and Percent Yield INTRODUCTION Stoichiometry calculations are about calculating the amounts of substances that react and form in a chemical reaction. The word stoichiometry
More informationCHEMISTRY. 4B: Indicators of Chemical Reactions. Key Question: How can we tell when a chemical reaction is taking place?
Chapter 4 4B: Indicators of Chemical Reactions A NATURAL APPROACH TO CHEMISTRY Key Question: How can we tell when a chemical reaction is taking place? In this Investigation, students perform five qualitative
More informationAcid Base Titration Experiment ACID - BASE TITRATION LAB
ACID - BASE TITRATION LAB MATERIALS and CHEMICALS Burette 50 ml Burette clamp Ring stand Stirring rod Plastic funnel Beakers (50 ml, 100 ml, 400 ml) Graduated cylinder (25 ml, 50 ml) 0.10 M NaOH 0.10 M
More informationGeneral Stoichiometry Notes STOICHIOMETRY: tells relative amts of reactants & products in a chemical reaction
General Stoichiometry Notes STOICHIOMETRY: tells relative amts of reactants & products in a chemical reaction Given an amount of a substance involved in a chemical reaction, we can figure out the amount
More informationNihal İKİZOĞLU 1. TYPE of CHEMICAL REACTIONS. Balance the following chemical equations. 1. Fe + H 2 SO 4 Fe 2 (SO 4 ) 3 + H 2
TYPE of CHEMICAL REACTIONS Balance the following chemical equations. 1. Fe + H 2 SO 4 Fe 2 (SO 4 ) 3 + H 2 2. C 2 H 6 + O 2 H 2 O + CO 2 3. KOH + H 3 PO 4 K 3 PO 4 + H 2 O 4. SnO 2 + H 2 Sn + H 2 O 5.
More informationPeriodicity of Properties of Oxides
Microscale Periodicity of Properties of Oxides Some oxides produce acidic solutions when they dissolve in water. These oxides are classified as acidic oxides (acid anhydrides), and they are the primary
More informationSanta Monica College Chemistry 11
Types of Reactions Objectives The objectives of this laboratory are as follows: To perform several types of simple chemical reactions, To become familiar with some common observable signs of chemical reactions,
More informationChemical Reactions Chapter 8 PART TWO
NAME Hour Date Chemical Reactions Chapter 8 PART TWO Practice A Assessment 1 Objective 5: Predict the product of a combination reaction by writing a complete balanced equation. Directions: Write a complete
More informationLEVEL ZERO VOICE CATALYST (10 minutes, individual work): 1. Counting atoms
Assignment 4 Chemical Detectives at the Molecular Level LO: To explain the differences between chemical and physical changes through observable evidence. EQ: What evidence can be used to tell the difference
More informationConservation of Mass in Chemical Reactions Lab. Experiment Question: What happens to the total mass of substances when a chemical reaction occurs?
Conservation of Mass in Chemical Reactions Lab Name: 5 th Grade PSI Science Score: / 5 Experiment Question: What happens to the total mass of substances when a chemical reaction occurs? Hypothesis Starters:
More information2. What type of bonding allows water to attract other water molecules? 3. What is the difference between solutions and mixtures?
Biology Lab Name(s) Period: Date: Purpose: To investigate the properties of water, ph, and enzymes that biologically impact biological functions. Background Information: Water: Sometimes we call water
More informationEXPERIMENT 8 Determining K sp
EXPERIMENT 8 Determining K sp Introduction The solubility product constant, or K sp of a compound is an equilibrium constant that describes the degree to which a solid dissolves in water. The K sp is calculated
More informationThe table shows the results of some tests carried out on three solutions, A, B and C. Hydrochloric acid is added. Solution
1 Chemical tests can be used to identify compounds. The table shows the results of some tests carried out on three solutions, A, B and C. Solution Flame Test Hydrochloric acid is added Sodium hydroxide
More informationSeparation and Qualitative Determination of Cations and Anions
Separation and Qualitative Determination of Cations and Anions Introduction Much of laboratory chemistry is focused on the question of how much of a given substance is contained in a sample. Sometimes,
More informationScientific Observations and Reaction Stoichiometry: The Qualitative Analysis and Chemical Reactivity of Five White Powders
Scientific Observations and Reaction Stoichiometry: The Qualitative Analysis and Chemical Reactivity of Five White Powders Objectives Part 1: To determine the limiting reagent and percent yield of CuCO
More informationIntroduction to Chemical Equations. Introduction to Chemical Equations. How do you write a skeleton equation?
Introduction to Chemical Equations Introduction to Chemical Equations How do you write a skeleton equation? Introduction to Chemical Equations All chemical reactions involve changing substances. In a chemical
More informationAQA Chemistry A-level
AQA Chemistry A-level Required Practical 4 Carry out simple test-tube reactions to identify cations and anions + Cations: Group 2 ions, NH 4 Test for group 2 ions: sodium hydroxide -3 1. Place 10 drops
More informationClassifying Chemical Reactions
Classifying Chemical Reactions Prepared by M.L. Holland and A.L. Norick, Foothill College Purpose of the Experiment To make observations when reactants are combined and become familiar with indications
More informationChemistry CP Lab: Additivity of Heats of Reaction (Hess Law)
Chemistry CP Lab: Additivity of Heats of Reaction (Hess Law) Name: Date: The formation or destruction of chemical bonds is always accompanied by an energy exchange between the reactant molecules and the
More informationEquilibrium and LeChatelier s Principle
1 Equilibrium and LeChatelier s Principle Purpose: To examine LeChatelier s Principle by studying disturbances applied to several equilibrium systems. Introduction Many chemical reactions reach a state
More informationObjective: Determine the general properties of ionic compounds and compare those properties to the properties of a covalent compound.
LAB: PROPERTIES OF IONIC COMPOUNDS Name Introduction The goal of this lab is for you to discover some of the properties of ionic compounds. The physical properties of a substance such as flame color, crystal
More informationIdentification of Ions and Gases
Identification of Ions and Gases Question Paper 1 Level IGSE Subject hemistry (0620/0971) Exam oard ambridge International Examinations (IE) Topic cids, bases and salts Sub-Topic Identification of ions
More informationChemistry 1B Experiment 14 65
Chemistry 1B Experiment 14 65 14 Electrochemistry Introduction In this experiment you will observe some spontaneous and non-spontaneous oxidation-reduction reactions, and see how the spontaneous reactions
More informationDescribe in full the colour change at the end-point of this titration. ... (1)
Q1. (a) A solution of barium hydroxide is often used for the titration of organic acids. A suitable indicator for the titration is thymol blue. Thymol blue is yellow in acid and blue in alkali. In a titration
More informationChem 2115 Experiment # 6 PERIODIC RELATIONSHIPS
Chem 2115 Experiment # 6 PERIODIC RELATIONSHIPS OBJECTIVES: Gaining insight into property and reactivity trends within families and across periods for the chemical elements through experimental observation.
More informationChemical Reactions CHAPTER Reactions and Equations
CHAPTER 9 Chemical Reactions 9.1 Reactions and Equations The process by which atoms of one or more substances are rearranged to form different substances is called a chemical reaction. There are a number
More informationCHEMISTRY 20 Simple Composition (Formation) and Simple Decomposition Reactions! (sc aka f) elements combine to form one single product! (sd) reactant breaks down to form pure elements from the periodic
More information2014 Chemistry 1 st Semester Exam Review Packet
Name: Date: Hour: 2014 Chemistry 1 st Semester Exam Review Packet 1. What percentage of the water on Earth is salt water? (1 point) A. 97.2% B. 0.009% C. 2.11% D. 2.8 % 2. One similarity between all mixtures
More informationExperiment 7: SIMULTANEOUS EQUILIBRIA
Experiment 7: SIMULTANEOUS EQUILIBRIA Purpose: A qualitative view of chemical equilibrium is explored based on the reaction of iron(iii) ion and thiocyanate ion to form the iron(iii) thiocyanate complex
More informationCIE Chemistry A-Level Practicals for Papers 3 and 5
CIE Chemistry A-Level Practicals for Papers 3 and 5 Ion Identification Group 2 Ions Identification Example -3 1. Place 10 drops of 0.1 mol dm barium chloride in a clean test tube. Must be clean to ensure
More informationDefinition: the process by which one or more substances are rearranged to form different substances. Another name for a chemical change.
Chemical Reactions I. What is a chemical reaction? Definition: the process by which one or more substances are rearranged to form different substances. Another name for a chemical change. A. How can you
More information