The periodic table is the most recognized symbol in chemistry across the world. It is a valuable tool that allows scientists not only to classify the
|
|
- Tyrone Fowler
- 5 years ago
- Views:
Transcription
1
2 The periodic table is the most recognized symbol in chemistry across the world. It is a valuable tool that allows scientists not only to classify the elements but also to explain and predict their properties. Similarities and differences that repeat among the elements give rise to so-called periodic trends, both across rows and within columns of the periodic table. Recognizing periodic trends in the physical and chemical properties of the elements is key to understanding the full value of the periodic table. Pre-Lab Question 1: What are periodic trends and where can they be found occuring in the periodic table?
3 This experiment will identify periodic trends in the activity of certain metals. The reactions of magnesium, calcium and aluminum with water and acids will be compared in order to determine the trend in metal activity within a group (Mg vs. Ca) and across a period (Mg vs. Al) in the periodic table. Metals that are very reactive can form bases (example: Calcium Hydroxide, Ca(OH) 2 ) when in the presence of water, Equation 1, and when they are in the presence of an acid they can form hydrogen gas (H 2 ) bubbles, Equation 2. Ca(s) + H 2 O(l) Ca(OH) 2 (aq) + H 2 (g) Equation 1 Ca(s) + HCl(aq) CaCl 2 (aq) + H 2 (g) Equation 2 We will perform a chemical test (bases turn litmus paper from red to blue) and make close observations of the reactions to determine the presence of these products and then use the data as evidence of the periodic trend of activity across period and down a group. Pre-Lab Questions Continued: 2. What is the purpose of the lab? 3. What evidence can be found that shows that our experiment is a success?
4 Calcium and magnesium are very reactive, flammable solids and possible skin irritants. Use forceps to handle these metals. Hydrochloric acid is toxic by ingestion and inhalation and is corrosive to skin and eyes; avoid contact with body tissues. Wear chemical splash goggles. Always wash hands thoroughly before leaving the lab. Pre-lab Questions Continued: 3. What hazards are associated with the use of calcium, magnesium and hydrochloric acid? 4. What safety precautions must be followed to protect against these hazards?
5 24-well reaction plate 50ml beaker Aluminum foil Calcium turnings Hydrochloric acid, HCl, 0.5M, 3ml Magnesium ribbon Water (distilled or deionized)
6 1. Obtain 2 pieces of calcium turnings (in a 50ml beaker), 2 pieces of magnesium ribbon, and a piece of aluminum foil. 2. Place a 24-well reaction plate on top of a sheet of white paper. 3. Use a pipet to add 20 drops of water to wells A1 A3. 4. Test the water in wells A1 A3 with a piece of red or neutral litmus paper and record the initial color of the litmus paper for this litmus test in the Data Table. 5. Using forceps add one piece of calcium to well A1. 6. Using forceps add one piece of magnesium ribbon to well A2. 7. Tear off half of the aluminum foil and roll into a loose ball. Add the aluminum metal to well A3. 8. Observe each well and record all immediate observations in the Data Table. If no changes are observed in a particular well, write NR (No Reaction) in the Data Table. 9. Test the water in wells A1-A3 with a piece of red or neutral litmus paper and record the changes for this litmus test in the Data Table. 10. Continue to watch each well for 1-2 minutes. Record any observations comparing the speed of the reactions. 11. Repeat steps 3 and 5-8 but instead of water add 20 drops of HCl to wells D1-D3. Record all observations on the Data Table. 12. Was there any evidence that a gas is being produced in wells D1-D3? Test by bringing a lit match to the space just above each well. Record any observations for this match test in the Data Table. A1 A2 A3 Ca, H 2 O Mg, H 2 O Al, H 2 O B1 B2 B3 A1 A2 A3 D1 D2 D3 Ca, HCl Mg, HCl Al, HCl
7 Calcium Magnesium Aluminum Reaction with H 2 O Observations Reaction with HCl Optional Litmus Test Observations Optional Match Test
8 1. Which group 2A metal, magnesium or calcium is more active? Cite your evidence. 2. Which period 3 metal, magnesium or aluminum, is more active? Cite your evidence. 3. Rank the three metals from most active to least active. 4. Write a Conclusion Statement that describes the periodic trend in metal activity down a group and across a period. Be sure to cite Evidence (Data) to support your Claim and include Commentary on why your claim is important in our understanding of the periodic table.
9 Pre-Lab Questions Data Table Post-Lab Questions
Lab- 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 informationProperties of Acids and Bases
Page I - Identification and Classification 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? What
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 6 Empirical Formula of a Compound
EXPERIMENT 6 Empirical Formula of a Compound INTRODUCTION Chemical formulas indicate the composition of compounds. A formula that gives only the simplest ratio of the relative number of atoms in a compound
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 informationChemical Background Information: Magnesium reacts with oxygen in air to for magnesium oxide, according to equation 1.
HESS S LAW LAB Pre lab assignment: You will need to complete the following parts prior to doing the lab: Title, Purpose, and Storyboard of the procedures for each part, Blank Data tables, and the Prelab
More informationUpset Tummy? MOM to the Rescue! LeChâtelier s Principle
Upset Tummy? MOM to the Rescue! LeChâtelier s Principle SCIENTIFIC Introduction Mix milk of magnesia (MOM) with universal indicator and observe the dramatic rainbow of colors as the antacid dissolves in
More informationChemistry Lab Define Acids and Bases
Introduction Chemistry Lab Define Acids and Bases By the 1500 s chemists recognized that certain substances shared a common property a sour taste. These substances possessed other characteristic properties
More informationClassi fying Chemical Reactions
Page 7 - Classifying Chemical Reactions Introduction Classifying Chemical Reactions Analyzing and Predicting Products The power of chemical reactions to transform our lives is visible all around us- in
More informationElectrochemical Cells
reactions involve the processes of oxidation and reduction. In this three-part lab, these reactions are studied by with sugars, fats, and proteins that provide energy for life to the corrosion of metals,
More informationThermodynamics Enthalpy of Reaction and Hess s Law
P.O. Box 219 Batavia, Illinois 60510 1-800-452-1261 flinn@flinnsci.com Visit our website at: www.flinnsci.com 2003 Flinn Scientific, Inc. All Rights Reserved. Your Safer Source for Science Supplies Thermodynamics
More informationClassifying Chemical Reactions
C02(g) Page 7 - Introduction Analyzing and Predicting Products 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 try
More informationIntroduction. Objectives
Experiment: Acids, Bases, and Buffers * Introduction Many common household solutions contain acids and bases. Acid-base indicators, such as litmus and red cabbage juice, turn different colors in acidic
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 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 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 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 information7-A. Inquiry INVESTIGATION. 322 MHR Unit 3 Quantities in Chemical Reactions. Skill Check. Safety Precautions
Inquiry INVESTIGATION 7-A Skill Check Initiating and Planning Performing and Recording Analyzing and Interpreting Communicating Safety Precautions Wear safety eyewear throughout this investigation. Wear
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 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 informationMONDAY (12/12) TUESDAY (12/13) WEDNESDAY (12/14) THURSDAY (12/15) FRIDAY (12/16) Making Acid Rain (a lab) Quiz
Homework Activities Name: Date: Period: This week, we will be using our knowledge of acids and bases and studying how acids, specifically acid rain, affect our lives and our environment. We will also end
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 informationTo determine relative oxidizing and reducing strengths of a series of metals and ions.
Redox Reactions PURPOSE To determine relative oxidizing and reducing strengths of a series of metals and ions. GOALS 1 To explore the relative oxidizing and reducing strengths of different metals. 2 To
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 informationExperiment 1: The Periodic Behavior of Metals
Experiment 1: The Periodic Behavior of Metals Some metals readily dissolve in water, some only dissolve in acid, and some do not react with either one. How can we explain this? To address this question
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 informationMicro Mole Rockets. Hydrogen and Oxygen Mole Ratio
Page 7 - Introduction Hydrogen and Oxygen Mole Ratio "It will free man from the remaining chains, the chains of gravity which still tie him to his planet. n- Wemher von Braun The combustion reaction of
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 informationINTRODUCTION TO ACIDS, BASES AND TITRATION
Experiment INTRODUCTION TO ACIDS, BASES AND TITRATION The CCLI Initiative Computers in chemistry Laboratory Instruction LEARNING OBJECTIVES The objectives of this experiment are to... introduce the nature
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 informationEXPERIMENT #8 Acid-Base I: Titration Techniques
EXPERIMENT #8 Acid-Base I: Titration Techniques OBJECTIVES: Dispense a precise volume of a solution with a buret Titrate a known volume of acid solution with a standard solution of base Reach a proper
More informationMicroscale Acid-Base Titration
icroscale Acid-Base Titration Experiment 31 A titration is a process used to determine the volume of a solution needed to react with a given amount of another substance. In this experiment, you will titrate
More informationIf you need to reverse a reaction, the enthalpy is negated:
In the previous experiment you explored the heat of solution of potassium hydroxide. Using Hess s law, you will now use those results in conjunction with the data collected in this experiment to determine
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 informationAcidity of Beverages Lab
Acidity of Beverages Lab Name: Introduction: Common beverages may be either acidic or basic. Fruit juices, for example, get their sweet taste from sugars and their sour or tart taste from weak acids such
More informationExploring Equilibrium
Page 7 - It Works Both Ways Introduction The word equilibrium has two roots: mqui, meaning equal, and libra, meaning weight or balance. Our physical sense of equilibrium-in the motion of a seesaw or the
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 informationApply the ideal gas law (PV = nrt) to experimentally determine the number of moles of carbon dioxide gas generated
Teacher Information Ideal Gas Law Objectives Determine the number of moles of carbon dioxide gas generated during a reaction between hydrochloric acid and sodium bicarbonate. Through this investigation,
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 Name: Partner: Discussion Question #1 will be evaluated 25 marks (5 marks per reaction) - 2 marks for correct reactants and products - 1 mark for states - 1 mark for balancing
More informationStudent s Name: Date : Preparation and properties of ammonia - NH 3 (g)
Student s Name: Date : Background Preparation and properties of ammonia - NH 3 (g) Ammonia is used as a cleaning agent in household ammonia solution, as a cheap base in industry, in the manufacture of
More informationWhat if It s an Acid and a Base? Food Additives
What if It s an Acid and a Base? Food Additives SIETIFI Introduction Any change in the p of a protein s environment will cause observable changes in the solubility of the protein. Solubility changes, in
More informationAscorbic Acid Titration of Vitamin C Tablets
Ascorbic Acid Titration of Vitamin C Tablets Part A. Preparation of Vitamin C Tablet Solutions 1. Obtain two vitamin C tablets. Place a plastic weighing boat on the balance, and press zero to tare the
More informationAcids and Bases. How does ph affect biological solutions? Introduction. Prelab Preparation Review Section 2.3 on acids and bases in your textbook.
Acids and Bases How does ph affect biological solutions? Learning Objectives To relate the ph scale to how acidic or basic a solution is. To explain how a buffer affects the ph of a solution. Process Objectives
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 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 informationRecognizing Chemical and Physical Changes
Chapter 2 Properties of Matter Investigation 2A Recognizing Chemical and Physical Changes Background Information Some chemical and physical changes are easy to recognize. Other changes may be easy to observe,
More informationLAB TEST Physical and Chemical Changes
NAME: DATE: STATION: LAB TEST Physical and Chemical Changes PURPOSE: To observe physical and chemical changes in matter MATERIALS: 3 medium test tubes 1 small test tube test tube rack test tube holder
More informationWhat 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 informationIdentifying Solids 1-2 KEY CONCEPTS AND PROCESS SKILLS KEY VOCABULARY ACTIVITY OVERVIEW L A B O R ATO R Y A-69
Identifying Solids 40- to 1-2 50-minute sessions ACTIVITY OVERVIEW 7 L A B O R ATO R Y Students conduct tests on the solids separated from the mixture to gain information about the physical and chemical
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 information8 Titration of Acids and bases
8 Titration of Acids and bases Name: Date: Section: Objectives Reinforce acid-base chemistry principles from chapter 4 in Silberberg Standardize a sodium hydroxide solution Determine the molarity of an
More informationHydrolysis of Salts Weak Acids and Bases
elearning 2009 Introduction Hydrolysis of Salts Weak Acids and Bases Publication No. 9117 Show the effects of hydrolysis of salts on the acidbase properties of a solution with this colorful demonstration
More informationToxins 4/27/2010. Acids and Bases Lab. IV-17 to IV-22
Toxins IV-17 to IV-22 Countless products are advertised on TV with the promise of reducing acid indigestion. a.what is acid indigestion? b.what does acid have to do with your stomach? c.how do you think
More informationH 2 CO 3 (aq) HNO 2 (aq) + HNO 3 (aq)
ACID RAIN LAB ENV 1.PALM From Science with Handhelds, Vernier Software & Technology, 2002. INTRODUCTION In this experiment, you will observe the formation of four acids that occur in acid rain: carbonic
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 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 information2/24/2010. Mr. Puccetti Spring What toxins have you encountered in your life? 2. How can toxins enter the body? 3. How can toxins harm you?
Mr. Puccetti Spring 2010 how toxins are defined how chemists determine toxicity the mechanisms by which toxic substances act in our bodies and what this has to do with chemical reactions 1. What toxins
More informationAscorbic Acid Titration of Vitamin C Tablets
Ascorbic Acid Titration of Vitamin C Tablets Introduction This experiment illustrates how titration, the process of slowly adding one solution to another until the reaction between the two is complete,
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 informationEXPERIMENT. Oxidation-Reduction Activity Series
EXPERIMENT Oxidation-Reduction Activity Series Hands-On Labs, Inc. Version 42-0186-00-02 Review the safety materials and wear goggles when working with chemicals. Read the entire exercise before you begin.
More informationMicroscale Acid-Base Titration
Microscale Acid-Base Titration Experiment 36 A titration is a process used to determine the volume of a solution needed to react with a given amount of another substance. In this experiment, you will titrate
More informationTo measure ph s in a variety of solutions and mixtures and to account for the results obtained.
Acid-Base Studies PURPOSE To measure ph s in a variety of solutions and mixtures and to account for the results obtained. GOALS 1 To learn to use ph paper and a ph meter to measure the ph of a given solution.
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 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 informationRecovery of Copper Renee Y. Becker Manatee Community College
Recovery of Copper Renee Y. Becker Manatee Community College Introduction In this lab we are going to start with a sample of copper wire. We will then use a sequence of reactions to chemically transform
More information1. Making salt an introduction to some basic techniques Student Sheet
Teaching AS Chemistry Practical Skills 1. Making salt an introduction to some basic techniques Student Sheet This practical is intended to help you become confident in some of the skills you may have used
More informationChem 1B Saddleback College Dr. White 1. Experiment 5: Separation and Identification of Group I Cations (The Chloride Group: Ag +, Pb 2+, and Hg 2
Chem 1B Saddleback College Dr. White 1 Experiment 5: Separation and Identification of Group I Cations (The Chloride Group: Ag +, Pb 2+, and Hg 2 2+) Objective To understand the chemical reactions involved
More informationName Date Class. Chapter 19 Acids, Bases, and Salts EXPERIMENT. ESTIMATION OF ph PURPOSE BACKGROUND MATERIALS (PER PAIR)
Chapter 19 Acids, Bases, and Salts EXPERIMENT ESTIMATION OF Text Reference Sections 19.2 PURPOSE To estimate the of solutions by using acid base indicators. BACKGROUND If you are interested in gardening,
More informationStudent s Name: Electrical conductivity of acids and bases
Student s Name: Date: Electrical conductivity of acids and bases Background Strong acids and bases are those that are essentially completely ionised or dissociated in aqueous solution. Weak acids and bases
More informationExamples of Strong Acids: Strong Acid Formula Common Source Hydrochloric Acid HCl Stomach Acid
ACIDS AND BASES: PH AND BUFFERS PURPOSE: To determine the ph of common acids and bases using a ph meter, ph paper, and red cabbage indicator. To test the effect of adding an acid or base to a buffer solution.
More informationAscorbic Acid Titration of Vitamin C Tablets
Ascorbic Acid Titration of Vitamin C Tablets Introduction This experiment illustrates how titration, the process of slowly adding one solution to another until the reaction between the two is complete,
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 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 informationDETERMINATION OF THE SOLUBILITY PRODUCT OF GROUPII HYDROXIDES
INTRODUCTION DETERMINATION OF THE SOLUBILITY PRODUCT OF GROUPII HYDROXIDES SOLUBILTY EQUILIBRIA Many systems in chemistry appear to be static when in fact they are in (dynamic) equilibrium. When a system
More informationWorking in the Chemistry Laboratory
Working in the Chemistry Laboratory Accelerated Chemistry I Introduction: One of the most important components of your chemistry course is the laboratory experience. Perhaps you have done experiments in
More informationRead the lab thoroughly. Answer the pre-lab questions that appear at the end of this lab exercise.
Experiment 10 Stoichiometry- Gravimetric Analysis Pre-lab Assignment Read the lab thoroughly. Answer the pre-lab questions that appear at the end of this lab exercise. Purpose The purpose this experiment
More informationAcid-Base Titration. Sample
Acid-Base Titration Computer 7 A titration is a process used to determine the volume of a solution that is needed to react with a given amount of another substance. In this experiment, your goal is to
More informationIntroduction. Concepts Kinetics Order of reaction Reaction rate Colorimetry. Background
Introduction Phenolphthalein is a dye that is used as an acid-base indicator. It is colorless in acidic or neutral solutions and turns bright red-violet (fuschia) as the solution becomes basic. In strongly
More informationExperiment Nine Acids and Bases
Name: Lab Section: Experiment Nine Acids and Bases Objective Identifying and understanding the nature of acids and bases is an important part of the laboratory toolbox, the purpose of this lab is to help
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 informationCOPYRIGHT FOUNTAINHEAD PRESS
Calorimetry: Heats of Solution Objective: Use calorimetric measurements to determine heats of solution of two ionic compounds. Materials: Solid ammonium nitrate (NH 4 NO 3 ) and anhydrous calcium chloride
More informationo Test tube In this experiment, you ll be observing the signs of chemical reactions. These include the following:
Experiment: Chemical Reactions & Chemical s Objective In this experiment, students perform a variety of chemical reactions. For each reaction, student identify the signs that a reaction has occurred, write
More informationPhysical and ChemJcaJ Change
2 Textreference: Sections 1,3, 1.9 Physical and ChemJcaJ Change Background Have you ever thought of your eyes as powerful tools for studying chemistry? Many of the properties of matter and the changes
More informationThermochemistry. Introduction. Pre-lab. Safety
Introduction Thermochemistry All chemical reactions and phase changes involve energy. One form of energy is heat: when a change in the energy of a system results in a temperature difference, we say that
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 informationReaction of Magnesium with Hydrochloric Acid
Reaction of Magnesium with Hydrochloric Acid Your Name: Date: Partner(s): Objectives: React magnesium metal with hydrochloric acid, collecting the hydrogen over water. Calculate the grams of hydrogen produced
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 informationAscorbic Acid Titration of Vitamin C Tablets
Ascorbic Acid Titration of Vitamin C Tablets Introduction This experiment illustrates how titration, the process of slowly adding one solution to another until the reaction between the two is complete,
More informationMeasuring Enthalpy Changes
Measuring Enthalpy Changes PURPOSE To observe changes in enthalpy in chemical processes. GOALS To identify exothermic and endothermic processes. To relate enthalpy changes and entropy changes to changes
More informationHeat of Combustion: Magnesium
Heat of Combustion: Magnesium Experiment 21 In Experiment 17, you learned about the additivity of reaction heats as you confirmed Hess s Law. In this experiment, you will use this principle as you determine
More informationTitrations. Method for Titration. N Goalby chemrevise.org 1. Using the pipette
Titrations Titrations are done often to find out the concentration of one substance by reacting it with another substance of known concentration. They are often done with neutralisation reactions, but
More informationPlant Indicators for Acids and Bases
SCIENCE EXPERIMENTS ON FILE Revised Edition 5.28-1 Plant Indicators for Acids and Bases Carole R. Goshorn Topic Acid/base indicators Time Preparation by teacher 50 minutes; Part B, 45 minutes! Safety Adult
More informationThe Forensic Examiner
The Forensic Examiner Introduction Mr. Smith was found in his bed deceased. He had no known pre-existing conditions. Perform four tests using his blood and urine to determine the possible cause of death.
More informationKinetics of Crystal Violet Fading AP Chemistry Big Idea 4, Investigation 11 An Advanced Inquiry Lab (adapted by Flinn Scientific, Inc.
Introduction Kinetics of Crystal Violet Fading AP Chemistry Big Idea 4, Investigation 11 An Advanced Inquiry Lab (adapted by Flinn Scientific, Inc.) Crystal violet is a common, beautiful purple dye. In
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 information(b) Write the chemical equation for the dissolution of NaOH in water.
Making a Solution and Measuring ph Prelab Assignment Read the entire lab. Write an objective and any hazards associated with this lab in your laboratory notebook. Answer the following 6 questions in your
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 informationExperiment Eight Acids and Bases
Name: Lab Section: Experiment Eight Acids and Bases Objective Identifying and understanding the nature of acids and bases is an important part of the laboratory toolbox, the purpose of this lab is to help
More informationName... Class... Date...
The electrolysis of aqueous solutions of ionic compounds Specification references C4.3.1 The process of electrolysis C4.3.4 Electrolysis of aqueous solutions C4.3.5 Representation of reactions at s as
More information