Materials Aqueous solutions A H Micro-well plate Precipitate Lab Grid Aqueous solutions micro-pipettes Overhead transparency
|
|
|
- Ralf Craig
- 5 years ago
- Views:
Transcription
1 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 aqueous solutions of sodium with various solutions of nitrate and determine whether or not a chemical reaction has taken place. It will be known if a reaction has occurred by the presence or absence of a precipitate. A precipitate is a solid product of the reaction of two aqueous solutions. A precipitate can take on different appearances, but in general you will know a precipitate has formed when the solution goes from being clear to translucent (allowing some light to pass through) or opaque (allowing no light to pass through). The formation of the solid particle products (the substance(s) produced in a chemical reaction) from the aqueous reactants (the substances be reacted in a chemical reaction) is what causes the change in appearance. Many times the solid particles will reflect the light in different ways resulting in the possibility of a variety of colored precipitates being formed from various combinations of reactants. For this lab, sodium (Na + ) and nitrate (NO 3 - ) solutions have been chosen to narrow the possibilities of products because neither the sodium ion nor the nitrate ion will ever combine with any other ion to form a precipitate. Since these ions will not participate in the chemical reaction they are referred to as spectator ions. Any reaction that does occur must be a result of the other two ions participating in the reaction. Purpose To practice writing and naming ionic compounds. Materials Aqueous solutions A H Micro-well plate Precipitate Lab Grid Aqueous solutions micro-pipettes Overhead transparency Safety Many of the chemicals used in this lab are toxic. Silver nitrate (AgNO 3 ) in particular is highly toxic and will stain skin and clothing if allowed to come into contact with either. For all chemicals, alert teacher to any spills. If any substance should come into contact with your skin, wash immediately and alert your teacher. If any substances should contact your eyes, wash immediately for several minutes and alert your teacher. All substances should be disposed of in the sink, just be sure to rinse them down the drain with plenty of water. Wash your hands before you leave the lab. Procedure 1. Place a transparency over the solutions grid provided. 2. In the first row add 2-3 drops of solution A. 3. To the first square, and 2-3 drops of solution #1. 4. Write an ionic equation for the reactant ions. Example: 5. Determine if a reaction has taken place by observing a color change, solid forming, or both. If no reaction takes place, finish the chemical equation by writing No RXN ( no reaction ) Example: No RXN 6. If a reaction takes place, finish the chemical equation by writing the correct chemical formula for the product, naming it, and describing it in 1-2 words. Example: Ag 3 PO 4 silver phosphate Yellow ppt. HAVE YOUR TEACHER STAMP YOUR WORK AFTER GRID #9 TO VARIFY THAT YOU ARE CORRECTLY WRITING YOUR EQUATIONS, FORMULAS, AND NAMES!
2 1 Ag 3 PO 4 silver phosphate yellow ppt
3
4
5
6
The 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
Precipitation and Solubility
Precipitation and Solubility Purpose The purpose of this experiment is to determine a pattern for which ions react to produce precipitates. Introduction Many important reactions take place in water, such
PDFMAILER.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
Relative 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
In 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
Lab: Chemical Reactions
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).
The 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
Aqueous 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
To observe trends in solubility and exceptions to these trends. To write chemical formulas based on cation/anion charges.
Solubility Rules PURPOSE To develop a set of solubility rules. GOALS To observe trends in solubility and exceptions to these trends. To write chemical formulas based on cation/anion charges. To learn to
A 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
Chemical Reactions Lab PSI Chemistry
Chemical Reactions Lab PSI Chemistry Name Purpose: Observe the different types of chemical reactions. Materials: - 6 test tubes - test tube rack - 0.3 M copper(ii)sulfate solution - 0.3 M sodium hydroxide
Solubility Rules and Net Ionic Equations
Solubility Rules and Net Ionic Equations Why? Solubility of a salt depends upon the type of ions in the salt. Some salts are soluble in water and others are not. When two soluble salts are mixed together
Aqueous 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
Chemistry 1B Experiment 17 89
Chemistry 1B Experiment 17 89 17 Thermodynamics of Borax Solubility Introduction In this experiment, you will determine the values of H and S for the reaction which occurs when borax (sodium tetraborate
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
Chemical 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:
Aqueous 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
Chemical 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
EXPERIMENT A4: PRECIPITATION REACTION AND THE LIMITING REAGENT. Learning Outcomes. Introduction
1 EXPERIMENT A4: PRECIPITATION REACTION AND THE LIMITING REAGENT Learning Outcomes Upon completion of this lab, the student will be able to: 1) Demonstrate the formation of a precipitate in a chemical
Characteristics 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
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?
CHM 130LL: Double Replacement Reactions
CHM 130LL: Double Replacement Reactions One of the main purposes of chemistry is to transform one set of chemicals (the reactants) into another set of chemicals (the products) via a chemical reaction:
Chemistry: Lab Ions in Aqueous Solution
KEY Chemistry: Lab Ions in Aqueous Solution Introduction: Many ionic solids dissolve in water to form clear, aqueous solutions that conduct electricity. It is the ions that conduct the electric current.
More 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
TYPES 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
Scientific 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
Experiment 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
CHM-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
Reactivity of Halide Ions
Microscale Reactivity of Halide Ions The four halide salts used in this experiment are found in your body. Although sodium fluoride is poisonous, trace amounts seem to be beneficial to humans in the prevention
CHEMISTRY 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.
Chemical Bonds. MATERIALS 24-well microplate calcium chloride candle citric acid conductivity tester ethanol gloves iron ring lab apron
Microscale Chemical Bonds Chemical compounds are combinations of atoms held together by chemical bonds. These chemical bonds are of two basic types ionic and covalent. Ionic bonds result when one or more
Section 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:
The 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.
Identification 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
Hydrolysis 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
CHEMICAL REACTIONS. Chemical equations are written in the following standard format:
OBJECTIVE(S): Be able to identify if a reaction takes place and record your observations Be able to classify the type of reaction that takes place Write balanced chemical reactions based on physical observations
11.3 Reactions in Aqueous Solution. Chapter 11 Chemical Reactions Reactions in Aqueous Solution
Chapter 11 Chemical Reactions 11.1 Describing Chemical Reactions 11.2 Types of Chemical Reactions 11.3 Reactions in Aqueous Solution 1 CHEMISTRY & YOU How did soda straws get into limestone caves? These
What 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
EIGHT 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
Properties 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
White Before Your Eyes
Name Class Date You have learned how to describe matter based on its physical and chemical properties. You have also learned some signs that can help you determine whether a change in matter is a physical
"It s not that I m so smart, it s just that I stay with problems longer." --Albert Einstein--
CHEMISTRY 101 Hour Exam II October 29, 2013 Adams/Lindquist Name Signature Section "It s not that I m so smart, it s just that I stay with problems longer." --Albert Einstein-- This exam contains 17 questions
Chemical 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
Stresses 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.
Shifts 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
To 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
Pre-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
Acid / Base Titrations
Acid / Base Titrations v051413_7pm Objectives: Determine the concentration of a base solution using an acid standard. Optional: Precipitate an ionic salt for percent yield determination using the standardized
Microscale 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
Chem 4 example Ionic Chemical Reactions Fall 2006
Chem 4 example Ionic Chemical Reactions Fall 2006 Roger Jestes rjestesj@cs.ucsd.edu Example: You should get to the point where it takes about 3 minutes to do a problem like the So you ve got a bottle of
Chapter 4 Types of Chemical Reaction and Solution Stoichiometry
Chapter 4 Types of Chemical Reaction and Solution Stoichiometry Water, the Common Solvent One of the most important substances on Earth. Can dissolve many different substances. A polar molecule because
Separation 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
Solubility Reactions. objectives
Solubility Reactions objectives (#4 2) How do chemicals undergo a solubility reaction? (#4 2a) A student shall be able to identify if a reaction is a solubility reaction? (#4 2b) Students should be able
Chemistry 1B Experiment 11 49
Chemistry 1B Experiment 11 49 11 Buffer Solutions Introduction Any solution that contains both a weak acid HA and its conjugate base A in significant amounts is a buffer solution. A buffer is a solution
Qualitative Analysis II - Anions
1 Qualitative Analysis II - Anions Purpose: To study the chemistry of a number of anions and identify an anion in an unknown salt sample Introduction In this lab experiment you will learn how to identify
By contrast, solubility equilibrium reactions are written from the perspective of the solid reactant dissolving into ions
LAD F.2 (pg 1 of 8) Ksp Solubility Product for Calcium Hydroxide Name Per Introduction Most solubility equilibrium investigated in this course involve ionic compounds as opposed to molecular compounds.
D O UBLE DISPL Ac EMENT REACTIONS
Experiment 8 Name: D O UBLE DISPL Ac EMENT REACTIONS In this experiment, you will observe double displacement reactions and write the corresponding balanced chemical equation and ionic equations. Double
EXPERIMENT 4 THE N-BOTTLE PROBLEM
EXPERIMENT 4 THE N-BOTTLE PROBLEM INTRODUCTION The purpose of this experiment is to use your knowledge about acid-base and precipitation reactions that occur in aqueous solutions to identify the ionic
Experiment 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
D O UBLE DISPL Ac EMENT REACTIONS
Experiment 8 Name: D O UBLE DISPL Ac EMENT REACTIONS In this experiment, you will observe double displacement reactions and write the corresponding balanced chemical equation and ionic equations. Double
Using 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)
Chemistry 141 Samuel A. Abrash Chemical Reactions Lab Lecture 9/5/2011
Chemistry 141 Samuel A. Abrash Chemical Reactions Lab Lecture 9/5/2011 Q: Before we start discussing this week s lab, can we talk about our lab notebooks? Sure. Q: What makes a lab notebook a good notebook?
Determining the Rate Law for a Chemical Reaction
Determining the Rate Law for a Chemical Reaction Purpose: To determine the reaction orders, rate law, and rate constant for the reaction between persulfate ions, SO8 -, and iodide ions, I - Introduction
CSUS Department of Chemistry Experiment 3 Chem.1A
Experiment 3: Reactions in Aqueous Solutions: Pre lab Name: 10 points Due at the beginning of lab. Section: 1. Precipitation Reactions a. On the reverse side of this page or on a separate piece of paper,
CHEMISTRY 130 General Chemistry I OXIDATION-REDUCTION CHEMISTRY
CHEMISTRY 130 General Chemistry I OXIDATION-REDUCTION CHEMISTRY A solution of potassium permanganate is pink. [1] Color changes can often be used to monitor chemical reactions. DEPARTMENT OF CHEMISTRY
Chapter 4. Types of Chemical Reactions and Solution Stoichiometry
Chapter 4 Types of Chemical Reactions and Solution Stoichiometry Chapter 4 Table of Contents 4.1 Water, the Common Solvent 4.2 The Nature of Aqueous Solutions: Strong and Weak Electrolytes 4.3 The Composition
4.6 Describing Reactions in Solution
4.6 Describing Reactions in Solution The overall or formula equation for this reaction: K 2 CrO(aq) Ba(NO 3 ) 2 (aq) BaCrO 4 (s) 2KNO 3 (aq) Although the formula equation shows the reactants and products
Flushing Out the Moles in Lab: The Reaction of Calcium Chloride with Carbonate Salts
Flushing Out the Moles in Lab: The Reaction of Calcium Chloride with Carbonate Salts Pre-lab Assignment: Reading: 1. Chapter sections 3.3, 3.4, 3.7 and 4.2 in your course text. 2. This lab handout. Questions:
Measuring 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
L 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
AP CHEMISTRY 2007 SCORING GUIDELINES. Question 4
AP CHEMISTRY 2007 SCORING GUIDELINES Question 4 4. For each of the following three reactions, in part (i) write a balanced equation for the reaction and in part (ii) answer the question about the reaction.
Buffers for Biological Systems Laboratory Instructor s Manual
Buffers for Biological Systems Laboratory Instructor s Manual 1. Purpose and Concepts Covered...1 2. Effect of Temperature and Concentration on ph...1 A. Preparing Buffers...2 B. Analysis and Discussion...3
LEVEL 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
2/24/2010. 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
Thermodynamics and the Solubility of Sodium Tetraborate Decahydrate
Thermodynamics and the Solubility of Sodium Tetraborate Decahydrate In this experiment you, as a class, will determine the solubility of sodium tetraborate decahydrate (Na 2 B 4 O 7 10 H 2 O or Na 2 [B
Equilibrium 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
EXPERIMENT A5: TYPES OF REACTIONS. Learning Outcomes. Introduction. Upon completion of this lab, the student will be able to:
1 Learning Outcomes EXPERIMENT A5: TYPES OF REACTIONS Upon completion of this lab, the student will be able to: 1) Examine different types of chemical reactions. 2) Express chemical equations in molecular,
Chemical Reactions. Burlingame High School Chemistry 1
Chemical Reactions 1 Chemical Equations Chemical equations are use to describe: the substances that react, the reactants the substances that are formed, the products the relative amounts of all substances
Part 01 - Notes: Reactions & Classification
Objectives: Identify, define, and explain: combination reaction, synthesis reaction, decomposition reaction, single replacement reaction, double replacement reaction, combustion reaction, rapid oxidation,
acrylonitrile Calculate how many grams of acrylonitrile could be obtained from 651 kg of propylene, assuming there is excess NO present.
propylene acrylonitrile Calculate how many grams of acrylonitrile could be obtained from 651 kg of propylene, assuming there is excess NO present. 1 - Change the mass of propylene to moles propylene (formula
Chapter 6. Types of Chemical Reactions and Solution Stoichiometry
Chapter 6 Types of Chemical Reactions and Solution Stoichiometry Chapter 6 Table of Contents (6.1) (6.2) (6.3) (6.4) (6.5) (6.6) (6.7) (6.8) Water, the common solvent The nature of aqueous solutions: Strong
Title: Gravimetric verification of chloride concentration from a precipitate of silver nitrate.
Title: Gravimetric verification of chloride concentration from a precipitate of silver nitrate. Introduction: Gravimetric analysis is a method of quantitative chemical analysis used to determine the concentration
Last Lecture. K 2 SO 4 (aq) + Ba(NO 3 ) 2 (aq) AgNO 3 (aq) + KCl(aq) NaNO 3 (aq) + KCl(aq) What will happen when these are mixed together?
Announcements Precipitation lab write-up due tomorrow at the start of discussion Text HW due tomorrow in discussion Lon-capa HW #4 Type 1 due Monday, Oct 15 th at 7:00pm Lon-capa HW #4 Type 2 due Wednesday,
Chemistry 3202 Lab 6 Hess s Law 1
Chemistry 3202 Lab 6 Hess s Law 1 Lab 6 Hess's Law Introduction Chemical and physical changes are always accompanied by a change in energy. Energy changes may be observed by detecting heat flow between
EXPERIMENT 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
A reaction in which a solid forms is called a precipitation reaction. Solid = precipitate
Chapter 7 Reactions in Aqueous Solutions 1 Section 7.1 Predicting Whether a Reaction Will Occur Four Driving Forces Favor Chemical Change 1. Formation of a solid 2. Formation of water 3. Transfer of electrons
Mixtures of Acids and Bases
Mixtures of Acids and Bases CH202, lab 6 Goals : To calculate and measure the ph of pure acid and base solutions. To calculate and measure the ph of mixtures of acid and base solutions. Safety : Hydrochloric
Titration with an Acid and a Base
Skills Practice Titration with an Acid and a Base Titration is a process in which you determine the concentration of a solution by measuring what volume of that solution is needed to react completely with
97 MOLECULAR AND IONIC EQUATIONS
97 MOLECULAR AND IONIC EQUATIONS - Ions that show up IN THE SAME FORM on the left and right sides of a chemical equation are called SPECTATOR IONS. If we rewrite an ionic equation to leave out the spectator
EXPERIMENT 4. Le Chatelier s Principle INTRODUCTION
EXPERIMENT 4 Le Chatelier s Principle INTRODUCTION Le Chatelier s Principle states: When a stress is applied to a chemical system at equilibrium, the equilibrium concentrations will shift in a direction
Chemistry 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
Experiment 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,
Beaker A Beaker B Beaker C Beaker D NaCl (aq) AgNO 3(aq) NaCl (aq) + AgNO 3(aq) AgCl (s) + Na 1+ 1
CH 11 T49 MIXING SOLUTIONS 1 You have mastered this topic when you can: 1) define the terms precipitate, spectator ion, suspension, mechanical mixture, solution. 2) write formula equations, complete/total
General 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
Chemistry 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
EXPERIMENT. 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.
CHEMISTRY. 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
chapter 14: ions in aqueous solutions
chapter 14: ions in aqueous solutions Dissociation When a compound that is made of ions dissolves in water, the ions separate from one another. This is called dissociation. NaCl(s) Na + (aq) + Cl - (aq)
Level 1 Chemistry, 2011
90934 909340 1SUPERVISOR S Level 1 Chemistry, 2011 90934 Demonstrate understanding of aspects of chemical reactions 9.30 am uesday Tuesday 22 November 2011 Credits: Four Achievement Achievement with Merit
Amend Lab 15 Observing Equilibrium
Amend Lab 15 Observing Equilibrium Page 57 Add 50 ml graduated cylinder Page 58 In Procedure: steps 1 & 2 change 4 ml to 2 ml step 4 change 60 ml dilution to 30 ml steps 6, 7, 8 change 0.5 g to ½ scoop