11-1 Notes. Chemical Reactions

Size: px
Start display at page:

Download "11-1 Notes. Chemical Reactions"

Transcription

1 11-1 Notes Chemical Reactions

2 Chemical Reactions In a chemical reaction 1 or more substances (the reactants) change into 1 or more new substances (the products). Reactants are always written on the left of an equation Products are always written on the right side of the equation An (read as yields) separates them. Reactants yield products Example: Iron + oxygen iron (III) oxide

3 Word Equations To write a word equation: 1. Write the names of the reactants to the left of the arrow separated by plus signs if necessary 2. Write the names of the products to the right of the arrow separated by plus signs if necessary Example - Hydrogen peroxide water + oxygen

4 Chemical Equations A representation of a chemical reaction The formulas of the reactants on the left The formulas of the products on the right Example: Fe + O 2 Fe 2 O 3 A skeleton equation is a chemical equation that does not indicate the relative amounts of the products and reactants See table 11.1 for symbols used in equations

5 Writing Chemical Equations To write a chemical equation: 1. Write the formulas of the reactants to the left of the arrow 2. Write the formulas of the products to the right of the arrow Indicate the state each element is in. Ex. Gas = (g) Liquid = (l) Solid = (s) Aqueous solution = (aq) A catalyst is a substance that speeds up a reaction but is not used in the reaction. Catalysts are always written over the arrow.

6 Balancing Chemical Equations A balanced equation indicates the quantity of the reactants to make the products. To balance an equation we use coefficients which are small whole numbers that are placed in front of a particular formula in order to balance it. In a balanced chemical reaction the number of atoms on the left side of the equation must equal the number of atoms on the right side of the equation.

7 Balancing Chemical Equations Fe + O 2 Fe 2 O 3 1. Write the # of atoms of each element on each side of the arrow 2. Use coefficients to balance 4Fe + 3O 2 2Fe 2 O 3 Do not forget to reduce the coefficients if possible. Sample Problems #3 & 4 (homework)

8 11-2 Notes Types of Chemical Reactions

9 Classifying Reactions There are five general types of equations Combination Reactions Decomposition Reactions Single-replacement Reactions Double-replacement Reactions Combustion Reactions

10 Combination Reactions A chemical change in which two or more substances react to form a single new substance. Examples: a + b = c 2Mg + O 2 2MgO Generally a combination reaction involves two elements chemically combining, however, two compounds may also combine to form one new substance

11 Decomposition Reactions A chemical change in which a single compound is broken down into two or more simpler products Examples A b + c 2HgO 2Hg + O 2 Decomposition reactions will only have one reactant. The products can be single elements or simple compounds

12 Single-Replacement Reactions A chemical change in which one element replaces a second element in a compound Examples: a + bc ac + b Zn + Cu(NO 3 ) 2 Cu + Zn(NO 3 ) 2 Br 2 + NaI NaBr + I 2 Whether one metal will displace another metal from a compound depends on the relative reactivities of the two metals

13 Single-Replacement Reactions The activity series of metals lists metals in order of decreasing activity See table 11.2 p. 333 A reactive metal will replace any metal listed below it. Halogens decrease in activity as you go down the period. Br 2 + NaI NaBr + I 2 Br 2 + NaCl no reaction It would not react because bromine is less active then chlorine.

14 Double Replacement Reactions A chemical change involving an exchange of positive ions between two compounds Examples ab + cd ad + cb Na 2 S + Cd(NO 3 ) 2 CdS + 2NaNO 3 Ca(OH) 2 + 2HCl CaCl 2 + 2H 2 O

15 Combustion Reactions A chemical change in which an element or compound reacts with oxygen, often producing energy in the form of heat and light Hydrocarbons are often involved in combustion reactions Hydrocarbons react with oxygen to form carbon dioxide and water Examples: C 4 H 10 + O 2 CO 2 + H 2 O 2 Mg + O 2 2MgO also considered a combination reaction.

16 Predicting the Products of a Chemical Reaction The number of elements and/or compounds reacting is a good indicator of possible reaction type and thus possible products. Examples: In a combination reaction you will have at least 2 reactants In a double replacement reaction you will also have 2 reactants but they must be compounds not single elements. Copy Fig

17 11-3 Notes Reactions in Aqueous Solutions

18 Net Ionic Equations Many chemical equations take place in water, scientifically speaking, aqueous solution In the reaction of silver nitrate with sodium chloride, a solid silver chloride precipitates out. AgNO 3 (aq) + NaCl(aq) AgCl(s) + NaNO 3 (aq) This is the correct equation, but it does not show how the ions disassociate out of the solution.

19 Net Ionic Equations In the reaction, the AgNO 3 and the NaCl disassociate into Na +, Cl -, Ag + and NO 3- ions. You can show this happening by writing a complete ionic equation. Ag + (aq) + NO 3- (aq) + Na + (aq) + Cl - (aq) AgCl(s) + Na + (aq) + NO 3- (aq)

20 Net Ionic Equations If an ion appears on both sides of the equation, it means that it is not directly involved in the reaction. These ions are called spectator ions. When you write a net ionic equation you must leave out all spectator ions. Net Ionic Equation: Ag+(aq) + Cl-(aq) AgCl (s)

21 Net Ionic Equations Another Example: Pb(s) + AgNO 3 (aq) Ag(s) + Pb(NO 3 ) 2 (aq) Pb(s) + Ag + (aq) + NO NO - 3 Pb(s) + Ag + Pb(s) + 2Ag + Ag(s) + Pb 2+ (aq) Ag(s) + Pb 2+ (unbalanced) 2Ag(s) + Pb 2+ (balanced) A net ionic equation shows only those particles involved in the reaction and is balanced with respect to both mass and charge.

22 Predicting the formation of a Precipitate A precipitate is a solid that forms or settles out of a liquid mixture. You can predict the formation of a precipitate by using the general rules for the solubility of ionic compounds Copy table 11.3 page 344 Will a precipitate form when aqueous solutions of NaCO 3 (aq) and Ba(NO 3 ) 2 are mixed?

23 Predicting the formation of a Precipitate When these four ions are mixed the cations could change partners. If this happened the following compounds would form: NaNO 3 and BaCO 3 Sodium is an alkali metal. NO 3 is a nitrate salt. According to the table both of these are soluble so the combination will not form a precipitate.

24 Predicting the formation of a Precipitate CO 3 is a carbonate According to the table most carbonates are insoluble. Therefore, BaCO 3 is not soluble so it will form precipitate. Write the net ionic equation. Ba 2+ (aq) + CO 3 2- (aq) BaCO 3 (s)

Describing Chemical Reactions

Describing Chemical Reactions Describing Chemical Reactions Section 11.1-Describing Chemical Reactions To write a word equation, write the names of the reactants to the left of the arrow separated by plus signs; write the names of

More information

Chemical Equations and Chemical Reactions

Chemical Equations and Chemical Reactions Chemical Equations Chemical Equations and Chemical Reactions Chemical equations are concise representations of chemical reactions. Chemical Equations Symbols Used in Chemical Equations The formulas of

More information

CHAPTER 11: CHEMICAL REACTIONS. Mrs. Brayfield

CHAPTER 11: CHEMICAL REACTIONS. Mrs. Brayfield CHAPTER 11: CHEMICAL REACTIONS Mrs. Brayfield WRITING EQUATIONS Write the chemical equation for the following: Magnesium metal reacts with hydrochloric acid to form aqueous magnesium chloride and hydrogen

More information

CHEMICAL REACTIONS. Introduction. Chemical Equations

CHEMICAL REACTIONS. Introduction. Chemical Equations CHEMICAL REACTIONS Chemistry I Chapter 7 1 Chemical Equations Their Job: Depict the kind of reactants and products and their relative amounts in a reaction. 4 Al (s) + 3 O 2 (g) ---> 2 Al 2 O 3 (s) The

More information

CHAPTER Describing Chemical Reactions Reactants Products. New substances produced The arrow means yields TYPES OF EQUATIONS.

CHAPTER Describing Chemical Reactions Reactants Products. New substances produced The arrow means yields TYPES OF EQUATIONS. CHAPTER 11 Chemical Reactions 11.1 Describing Chemical Reactions Reactants Products New substances produced The arrow means yields Where do Chemical Reactions occur? Everywhere!!! In living organisms In

More information

Chemical Reactions and Equations

Chemical Reactions and Equations Chemical Reactions and Equations 5-1 5.1 What is a Chemical Reaction? A chemical reaction is a chemical change. A chemical reaction occurs when one or more substances is converted into one or more new

More information

Chemical Reactions. Burlingame High School Chemistry 1

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

More information

Intro to Reactions/ Balancing Equations

Intro to Reactions/ Balancing Equations Intro to Reactions/ Balancing Equations Chemical Reactions Chemical reactions involve change. Evidence of a chemical reaction could include the following Evolution of heat, light, and/or sound Production

More information

Unit 1 - Foundations of Chemistry

Unit 1 - Foundations of Chemistry Unit 1 - Foundations of Chemistry Chapter 2 - Chemical Reactions Unit 1 - Foundations of Chemistry 1 / 42 2.1 - Chemical Equations Physical and Chemical Changes Physical change: A substance changes its

More information

Chemical Reactions. Writing chemical reactions Types of chemical reactions Reactions in aqueous solutions. (ionic equations and solubility rules)

Chemical Reactions. Writing chemical reactions Types of chemical reactions Reactions in aqueous solutions. (ionic equations and solubility rules) Chemical Reactions Writing chemical reactions Types of chemical reactions Reactions in aqueous solutions (ionic equations and solubility rules) Writing Equations REACTANTS PRODUCTS gold (III) sulfide is

More information

CHEMICAL REACTIONS. Types of Reactions. Steps to Writing Reactions

CHEMICAL REACTIONS. Types of Reactions. Steps to Writing Reactions Types of Reactions CHEMICAL REACTIONS There are five types of chemical reactions we will talk about: 1. Synthesis reactions 2. reactions 3. Single displacement reactions 4. reactions 5. Combustion reactions

More information

8 Chemical Equations. Flames and sparks result when aluminum foil is dropped into liquid bromine.

8 Chemical Equations. Flames and sparks result when aluminum foil is dropped into liquid bromine. 8 Chemical Equations Flames and sparks result when aluminum foil is dropped into liquid bromine. Chapter Outline 8.1 The Chemical Equation 8.2 Writing and Balancing Chemical Equations 8.3 Types of Chemical

More information

Types of Reactions. There are five types of chemical reactions we observed in the lab:

Types of Reactions. There are five types of chemical reactions we observed in the lab: Chemical Reactions Acids and Bases Acids: Form hydrogen ions (H + ) when dissolved in water. HCl (aq) H + (aq) + Cl - (aq) Examples: HCl (hydrochloric acid), HNO 3 (nitric acid), H 2 SO 4 (sulfuric acid),

More information

A reaction in which a solid forms is called a precipitation reaction. Solid = precipitate

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

More information

Unit 4: Reactions and Stoichiometry

Unit 4: Reactions and Stoichiometry Unit 4: Reactions and Stoichiometry Reactions Chemical equation Expression representing a chemical reaction Formulas of reactants on the left side Formulas of products on the right side Arrow(s) connect(s)

More information

Chemical Reaction Types

Chemical Reaction Types Chemical Reactions Chemical Reaction Types There are 5 types of chemical reactions that you need to know Combination reaction Decomposition reaction Combustion reaction Single replacement (redox) reaction

More information

Types of Reactions. There are five main types of chemical reactions we will talk about:

Types of Reactions. There are five main types of chemical reactions we will talk about: Chemical Reactions Types of Reactions There are five main types of chemical reactions we will talk about: 1. Synthesis reactions 2. Decomposition reactions 3. Single displacement reactions 4. Double displacement

More information

TYPES OF CHEMICAL REACTIONS SYNTHESIS (COMPOSITION), DECOMPOSITION AND REPLACEMENT (SINGLE AND DOUBLE), AND COMBUSTION

TYPES OF CHEMICAL REACTIONS SYNTHESIS (COMPOSITION), DECOMPOSITION AND REPLACEMENT (SINGLE AND DOUBLE), AND COMBUSTION TYPES OF CHEMICAL REACTIONS SYNTHESIS (COMPOSITION), DECOMPOSITION AND REPLACEMENT (SINGLE AND DOUBLE), AND COMBUSTION YOU CAN THINK OF ATOMS AS PEOPLE GETTING TOGETHER AS COUPLES... Analogy One person

More information

7.01 Chemical Reactions

7.01 Chemical Reactions 7.01 Chemical Reactions The Law of Conservation of Mass Dr. Fred Omega Garces Chemistry 100 Miramar College 1 Chemical Reactions Making Substances Chemical Reactions; the heart of chemistry is the chemical

More information

11.3 Reactions in Aqueous Solution. Chapter 11 Chemical Reactions Reactions in Aqueous Solution

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

More information

7.01 Chemical Reactions

7.01 Chemical Reactions 7.01 Chemical Reactions The Law of Conservation of Mass Dr. Fred Omega Garces Chemistry 152 Miramar College 1 Chemical Reactions Making Substances Chemical Reactions; the heart of chemistry is the chemical

More information

Ch. 8 Notes ~ CHEMICAL REACTIONS NOTE: Vocabulary terms are in boldface and underlined. Supporting details are in italics.

Ch. 8 Notes ~ CHEMICAL REACTIONS NOTE: Vocabulary terms are in boldface and underlined. Supporting details are in italics. Ch. 8 Notes ~ CHEMICAL REACTIONS NOTE: Vocabulary terms are in boldface and underlined. Supporting details are in italics. I. Chemical Reactions (rxns.) A. chemical reaction an expression showing the conversion

More information

PHOTOSYNTHESIS as a chemical reaction

PHOTOSYNTHESIS as a chemical reaction CHEMICAL REACTIONS PHOTOSYNTHESIS as a chemical reaction SUNLIGHT CO 2 + H 2 O C 6 H 12 O 6 + O 2 REACTANTS PRODUCTS REACTANTS are the ingredients of a chemical reaction, always listed to the left of the

More information

Ch. 8 Chemical Reactions

Ch. 8 Chemical Reactions Ch. 8 Chemical Reactions Intro to Reactions I II III IV V Signs of a Chemical Reaction Evolution of heat and light Formation of a gas Formation of a precipitate Color change Law of Conservation of Mass

More information

Chemical Reactions. Chemical changes are occurring around us all the time

Chemical Reactions. Chemical changes are occurring around us all the time Chemical changes are occurring around us all the time Food cooking Fuel being burned in a car s engine Oxygen being used in the human body The starting materials are called reactants The ending materials

More information

Balancing CHEMICAL EQUATIONS

Balancing CHEMICAL EQUATIONS Balancing CHEMICAL EQUATIONS CHEMICAL REACTIONS involves a chemical change in the identity of one or more chemical species Ex. Rusting of iron (Fe): chemical rxn btwn water and iron involve the breaking

More information

Fe(s) + O2(g) Chapter 11 Chemical Reactions. Chemical Equations. Fe + O2. January 26, What is a chemical reaction?

Fe(s) + O2(g) Chapter 11 Chemical Reactions. Chemical Equations. Fe + O2. January 26, What is a chemical reaction? Chapter 11 Chemical Reactions What is a chemical reaction? Chemical Reaction: process by which one or more substances are changed into one or more different substances. Indications of a chemical reaction

More information

2) Solve for protons neutrons and electrons for the bromide ION.

2) Solve for protons neutrons and electrons for the bromide ION. 1) Write the formulas for the following a) Calcium nitride c)lithium hydroxide b) Iron (III) sulfide d) sulfuric acid 2) Solve for protons neutrons and electrons for the bromide ION. 3) Write the electron

More information

Solubility Rules See also Table 4.1 in text and Appendix G in Lab Manual

Solubility Rules See also Table 4.1 in text and Appendix G in Lab Manual Ch 4 Chemical Reactions Ionic Theory of Solutions - Ionic substances produce freely moving ions when dissolved in water, and the ions carry electric current. (S. Arrhenius, 1884) - An electrolyte is a

More information

Chapter 5. Chemical reactions

Chapter 5. Chemical reactions Chapter 5 Chemical reactions Chemical equations CaO(s) + CO 2 (g) CaCO 3 (s) + CO(g) Chemical equation - representation of a chemical reaction; uses the symbols of the elements and formulae of the compounds

More information

4.02 Chemical Reactions

4.02 Chemical Reactions 4.02 Chemical Reactions The Law of Conservation of Mass Dr. Fred Omega Garces Chemistry 111 Miramar College 1 Chemical Reactions Making Substances Chemical Reactions; the heart of chemistry is the chemical

More information

11.2 Types of Chemical Reactions> Chapter 11 Chemical Reactions Types of Chemical Reactions Describing Chemical Reactions

11.2 Types of Chemical Reactions> Chapter 11 Chemical Reactions Types of Chemical Reactions Describing Chemical Reactions Chapter 11 Chemical 11.1 Describing Chemical 11.2 Types of Chemical 11.3 in Aqueous Solution 1 CHEMISTRY & YOU What happens to the wax when you burn a candle? When you burn a candle, a chemical reaction

More information

Ch 7 Chemical Reactions Study Guide Accelerated Chemistry SCANTRON

Ch 7 Chemical Reactions Study Guide Accelerated Chemistry SCANTRON Ch 7 Chemical Reactions Study Guide Accelerated Chemistry SCANTRON Name /80 TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. Correct the False statments by changing the

More information

Chapter 9. Vocabulary Ch Kick Off Activity. Objectives. Interpreting Formulas. Interpreting Formulas

Chapter 9. Vocabulary Ch Kick Off Activity. Objectives. Interpreting Formulas. Interpreting Formulas Chapter 9 Chemical Vocabulary Ch. 9.1 Chemical reaction Reactant Product Word Equation Skeleton Equation Chemical equation Coefficient 1 2 Objectives Write chemical equations to describe chemical reactions

More information

CHEMICAL REACTION. Engr. Yvonne Ligaya F. Musico 1

CHEMICAL REACTION. Engr. Yvonne Ligaya F. Musico 1 CHEMICAL REACTION Engr. Yvonne Ligaya F. Musico 1 Chemical Reaction Engr. Yvonne Ligaya F. Musico 2 Introduction Chemical reactions occur when bonds between the outermost parts of atoms are formed or broken

More information

Word Equations. Symbols used in equations. Unit 7: Chemical Reactions. hydrogen peroxide water + oxygen

Word Equations. Symbols used in equations. Unit 7: Chemical Reactions. hydrogen peroxide water + oxygen Unit 7: Chemical Reactions Chemical reactions involve a reorganization of the atoms in one or more substances. Can be represented in different ways 1 Word Equations hydrogen peroxide reacts to produce

More information

9-1 The Nature of Chemical Reactions

9-1 The Nature of Chemical Reactions 9-1 The Nature of Chemical Reactions What are chemical reactions and why do they occur? A chemical reaction is a process in which one or more substances are converted into new substances with different

More information

CHEMICAL REACTIONS. Discuss breaking/forming bonds 10/29/2012. Products Reactants

CHEMICAL REACTIONS. Discuss breaking/forming bonds 10/29/2012. Products Reactants CHEMICAL REACTIONS - Page 321 Products Reactants Reactants: Zn + I 2 Product: Zn I 2 Discuss breaking/forming bonds Chemical Reaction or Change process in which one or more substances are converted into

More information

Chapter 9. Chemical Reaction

Chapter 9. Chemical Reaction Chapter 9 Chemical Reaction Everyday Chemical Reaction O Can you name some? O Cooking Pizza O Changes the ingredients O Combustion O Driving to school burns gasoline O Wheelbarrow rusting (especially in

More information

Chemical Reactions Chapter 11 Study Guide (Unit 8)

Chemical Reactions Chapter 11 Study Guide (Unit 8) Name: Hr: Understand and be able to explain all of the key concepts. Define and understand all of the survival words Memorize the names and symbols for these elements: (Ag, Al, Ar, As, Au, B, Ba, Be, Br,

More information

11.3 Reactions in Aqueous Essential Understanding Reactions that occur in aqueous solutions are double-replacement

11.3 Reactions in Aqueous Essential Understanding Reactions that occur in aqueous solutions are double-replacement 13. Is the following sentence true or false? Hydrocarbons, compounds of hydrogen and carbon, are often the reactants in combustion reactions. 14. Circle the letter of each compound that can be produced

More information

Types of Chemical Reactions

Types of Chemical Reactions Types of Chemical Reactions 1) Combination (Synthesis) Reaction 2) Decomposition 3) Single Replacement 4) Double Replacement 5) Combustion 6) Oxidation-Reduction (Redox) Combination (Synthesis) Reactions

More information

CHEMICAL REACTIONS WORDS, SYMBOLS AND ABBREVIATIONS

CHEMICAL REACTIONS WORDS, SYMBOLS AND ABBREVIATIONS CHEMICAL REACTIONS All chemical reactions have two parts: (1) A substance that undergoes a reaction is called a. In other words, reactants are the substances you start with. (2) When reactants undergo

More information

Chemical Equations. Chemical Reactions. The Hindenburg Reaction 5/25/11

Chemical Equations. Chemical Reactions. The Hindenburg Reaction 5/25/11 Chemical Reactions CHM 1032C Chemical Equations Chemical change involves a reorganization of the atoms in one or more substances. The Hindenburg Reaction Reactants are on left, products to the right. Arrow

More information

Unit 6.3 Types of Chemical reactions

Unit 6.3 Types of Chemical reactions Unit 6.3 Types of Chemical reactions Most chemical reactions can be classified into one of five types of reactions. It depends on both the reactants used and the products formed. The possible chemical

More information

Unit 5 Chemical Reactions Notes. Introduction: Chemical substances have physical and chemical properties

Unit 5 Chemical Reactions Notes. Introduction: Chemical substances have physical and chemical properties Unit 5 Chemical Reactions Notes Introduction: Chemical substances have physical and chemical properties Physical Properties 2 Types of Physical Properties Extensive Physical Properties Intensive Physical

More information

Chemical Reactions CHAPTER Reactions and Equations

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

More information

Chapter 8 Chemical Reactions

Chapter 8 Chemical Reactions Chemistry/ PEP Name: Date: Chapter 8 Chemical Reactions Chapter 8: 1 7, 9 18, 20, 21, 24 26, 29 31, 46, 55, 69 Practice Problems 1. Write a skeleton equation for each chemical reaction. Include the appropriate

More information

Chapter 5: Chemical Reactions

Chapter 5: Chemical Reactions Chapter 5: Chemical Reactions CHEMICAL EQUATIONS Chemical equations are a convenient way to represent chemical reactions. Chemical equations are written in terms of reactants and products. A symbol is

More information

Types of Chemical Reactions. Synthesis, Combustion, Decomposition and Replacement

Types of Chemical Reactions. Synthesis, Combustion, Decomposition and Replacement Types of Chemical Reactions Synthesis, Combustion, Decomposition and Replacement You can think of atoms as people getting together as couples... Analogy One person A couple Switching partners Chemical

More information

Chem A Ch. 9 Practice Test

Chem A Ch. 9 Practice Test Name: Class: Date: Chem A Ch. 9 Practice Test Matching Match each item with the correct statement below. a. product d. balanced equation b. reactant e. skeleton equation c. chemical equation 1. a new substance

More information

Single replacement reactions

Single replacement reactions Today s focus. Single replacement reactions 1. Learn to predict Single replacement reaction If and when a reaction occurs, what are the products? 2. Learn to write Single replacement reaction: (i) Balanced

More information

Unit 5: Chemical Equations and Reactions & Stoichiometry

Unit 5: Chemical Equations and Reactions & Stoichiometry pg. 10 Unit 5: Chemical Equations and Reactions & Stoichiometry Chapter 8: Chemical Equations and Reactions 8.1: Describing Chemical Reactions Selected Chemistry Assignment Answers (Section Review on pg.

More information

Evidence of a chemical reaction: heat, light, sound, gas emitted, color change, odor

Evidence of a chemical reaction: heat, light, sound, gas emitted, color change, odor Unit 7: Chemical Equations Evidence of a chemical reaction: heat, light, sound, gas emitted, color change, odor A reaction has occurred if the chemical and physical properties of the reactants and products

More information

(DO NOT WRITE ON THIS TEST)

(DO NOT WRITE ON THIS TEST) Final Prep Chap 8&9 (DO NOT WRITE ON THIS TEST) Multiple Choice Identify the choice that best completes the statement or answers the question. 1. After the correct formula for a reactant in an equation

More information

Chemical Reactions. Ch. 11 Chemical Reactions. Chemical Reactions. Chemical Reactions

Chemical Reactions. Ch. 11 Chemical Reactions. Chemical Reactions. Chemical Reactions Chemical Reactions Ch. 11 Chemical Reactions when a substance changes identity Reactants - original Products - resulting law of conservation of mass total mass of reactants = total mass of products In

More information

CHAPTER 8 CHEMICAL REACTIONS AND EQUATIONS

CHAPTER 8 CHEMICAL REACTIONS AND EQUATIONS CHAPTER 8 CHEMICAL REACTIONS AND EQUATIONS CHEMICAL REACTIONS Occurs when matter combines or breaks apart to produce new kinds of matter with different properties with a change in energy. EVIDENCE FOR

More information

Chemical Reactions. Indicators of a Chemical Reaction. Indicators of a Chemical Reaction 1. Formation of a solid (called a precipitate)

Chemical Reactions. Indicators of a Chemical Reaction. Indicators of a Chemical Reaction 1. Formation of a solid (called a precipitate) Chemical Reactions Quantitative Chem Indicators of a Chemical Reaction Indicators of a Chemical Reaction 1. Formation of a solid (called a precipitate) 1 Indicators of a Chemical Reaction 1. Formation

More information

Chapter 11. Symbols used in equations indicates a reversible reaction (More later) heat. Chemical Reactions

Chapter 11. Symbols used in equations indicates a reversible reaction (More later) heat. Chemical Reactions Chapter 11 Chemical Reactions All chemical reactions have two parts Reactants - the substances you start with Products- the substances you end up with The reactants turn into the products. Reactants Products

More information

Name Date Class CHEMICAL REACTIONS. SECTION 11.1 DESCRIBING CHEMICAL REACTIONS (pages )

Name Date Class CHEMICAL REACTIONS. SECTION 11.1 DESCRIBING CHEMICAL REACTIONS (pages ) Name Date Class 11 CHEMICAL REACTIONS SECTION 11.1 DESCRIBING CHEMICAL REACTIONS (pages 321 329) This section explains how to write equations describing chemical reactions using appropriate symbols. It

More information

elemental state. There are two different possibilities: DESCRIPTION 1. One cation (+ ion) replaces another. 2. One anion (- ion) replaces another.

elemental state. There are two different possibilities: DESCRIPTION 1. One cation (+ ion) replaces another. 2. One anion (- ion) replaces another. CHEMICAL TYPES HANDOUT In these reactions, a free element reacts with a compound to form another compound and release one of the elements of the original compound in the elemental state. There are two

More information

CHEMICAL REACTIONS. The process by which one or more substances are changed into one or more different substances

CHEMICAL REACTIONS. The process by which one or more substances are changed into one or more different substances CHEMICAL REACTIONS The process by which one or more substances are changed into one or more different substances Equations Reactions are represented by a chemical equation Reactants Products Must have

More information

Types of Chemical Reactions (rxns.)

Types of Chemical Reactions (rxns.) Types of Chemical Reactions (rxns.) Introduction Chemical reactions occur when bonds (between the electrons of atoms) are formed or broken Chemical reactions involve changes in the chemical composition

More information

Chemical Reactions and Equations Types of Reactions Predicting Products Activity Series Identifying Oxidation-Reduction Reactions

Chemical Reactions and Equations Types of Reactions Predicting Products Activity Series Identifying Oxidation-Reduction Reactions Chemical Reactions and Equations Types of Reactions Predicting Products Activity Series Identifying Oxidation-Reduction Reactions A preview of things we will do Chemical Reactions are AWESOME! Characteristics

More information

Chapter 8 Chemical Equations and Reactions

Chapter 8 Chemical Equations and Reactions Chapter 8 Chemical Equations and Reactions 8-1 Describing Chemical Reactions Chemical reactions Matter undergoes 2 types of changes: 1.Physical changes no new substance produced 2.Chemical changes new/different

More information

Definition: the process by which one or more substances are rearranged to form different substances. Another name for a chemical change.

Definition: 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

Chemical reactions describe processes involving chemical change

Chemical reactions describe processes involving chemical change 1.1 Chemical Reactions 1.2 Chemical Equations Chemical reactions describe processes involving chemical change The chemical change involves rearranging matter Converting one or more pure substances into

More information

Indicators of chemical reactions

Indicators of chemical reactions Indicators of chemical reactions Emission of light or heat Formation of a gas Formation of a precipitate Color change Emission of odor All chemical reactions: have two parts Reactants - the substances

More information

Chap. 4 AQUEOUS RXNS. O H δ+ 4.1 WATER AS A SOLVENT 4.2 AQUEOUS IONIC REACTIONS. Page 4-1. NaOH(aq) + HCl(g) NaCl(aq) +H 2 O

Chap. 4 AQUEOUS RXNS. O H δ+ 4.1 WATER AS A SOLVENT 4.2 AQUEOUS IONIC REACTIONS. Page 4-1. NaOH(aq) + HCl(g) NaCl(aq) +H 2 O Chap. AQUEOUS RXNS.1 WATER AS A SOLVENT Describe solution composition in terms of molarity Describe strong and weak electrolyte solutions, including acids and bases Use ionic equations to describe neutralization

More information

insoluble partial very soluble (< 0.1 g/100ml) solubility (> 1 g/100ml) Factors Affecting Solubility in Water

insoluble partial very soluble (< 0.1 g/100ml) solubility (> 1 g/100ml) Factors Affecting Solubility in Water Aqueous Solutions Solubility is a relative term since all solutes will have some solubility in water. Insoluble substances simply have extremely low solubility. The solubility rules are a general set of

More information

Lesson #6: Chemical Reaction Types

Lesson #6: Chemical Reaction Types Lesson #6: Chemical Types Type #1 The Synthesis In this type of reaction 2 or more elements or compounds combine to form a more complex compound Two or more things become one bigger thing (ex) 2Mg + O

More information

Solubility Rules and Net Ionic Equations

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

More information

What Do You Think? Investigate GOALS

What 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 information

Classifying Chemical Reactions

Classifying Chemical Reactions Chem 101 Classifying Chemical Reactions Lectures 17 and 18 Classifying Chemical Reactions Chemical reactions can be divided into five categories: I. Combination or Synthesis Reactions II. Decomposition

More information

Chapter 4 Electrolytes and Precipitation Reactions. Dr. Sapna Gupta

Chapter 4 Electrolytes and Precipitation Reactions. Dr. Sapna Gupta Chapter 4 Electrolytes and Precipitation Reactions Dr. Sapna Gupta Aqueous Solutions Solution - a homogeneous mixture of solute + solvent Solute: the component that is dissolved Solvent: the component

More information

Chemical Reactions Chapter 17

Chemical Reactions Chapter 17 Chemical Reactions Chapter 17 I. Physical Change Changes which affect the size or shape of the substance BUT NOT its chemical properties or formulas. e.g.; ice melting. Water is still water II. Chemical

More information

Chapter 4. Properties of Aqueous Solutions. Electrolytes in Aqueous Solutions. Strong, weak, or nonelectrolyte. Electrolytic Properties

Chapter 4. Properties of Aqueous Solutions. Electrolytes in Aqueous Solutions. Strong, weak, or nonelectrolyte. Electrolytic Properties Chapter 4 Reactions in Aqueous Solution Observing and Predicting Reactions How do we know whether a reaction occurs? What observations indicate a reaction has occurred? In your groups, make a list of changes

More information

Chapter 5: Chemical Reactions

Chapter 5: Chemical Reactions Chapter 5: Chemical Reactions CHEMICAL EQUATIONS Chemical equations are a convenient way to represent chemical reactions. Chemical equations are written in terms of reactants and products. A symbol is

More information

Ch 100: Fundamentals for Chemistry

Ch 100: Fundamentals for Chemistry Ch 100: Fundamentals for Chemistry Chapter 8: Chemical Equations Lecture Notes Chemical Equations (Intro) 1. Chemical equations are used to symbolically describe chemical reactions 2. In a chemical equation

More information

BALANCING EQUATIONS NOTES

BALANCING EQUATIONS NOTES BALANCING EQUATIONS NOTES WHY DO WE NEED TO BALANCE CHEMICAL EQUATIONS? The LAW OF CONSERVATION OF MASS says that matter cannot be created or destroyed. In other words, you cannot end up with any more

More information

Reactions in Aqueous Solution

Reactions in Aqueous Solution 1 Reactions in Aqueous Solution Chapter 4 For test 3: Sections 3.7 and 4.1 to 4.5 Copyright The McGrawHill Companies, Inc. Permission required for reproduction or display. 2 A solution is a homogenous

More information

Chapter 11 CHEMICAL REACTIONS

Chapter 11 CHEMICAL REACTIONS Chapter 11 CHEMICAL REACTIONS Get pumped Chemical Equations A Chemical equation is a representation of a chemical reaction with formulas of the reactants on the left and formulas of the products on the

More information

Chemical Reactions. Chemical Reactions Chemical reactions have a standard format when written:

Chemical Reactions. Chemical Reactions Chemical reactions have a standard format when written: 0.3.notebook A chemical property is a behaviour that occurs when substances change to create a new substance. When a new substance is created, a chemical change has occurred. New colour Evidence of chemical

More information

UNIT (4) CALCULATIONS AND CHEMICAL REACTIONS

UNIT (4) CALCULATIONS AND CHEMICAL REACTIONS UNIT (4) CALCULATIONS AND CHEMICAL REACTIONS 4.1 Formula Masses Recall that the decimal number written under the symbol of the element in the periodic table is the atomic mass of the element. Atomic mass

More information

Unit 8 Chemical Reactions- Funsheets

Unit 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 information

Chemical Reactions. Created by: Jana Perkins Hernando High School Ch 11

Chemical Reactions. Created by: Jana Perkins Hernando High School Ch 11 Chemical Reactions Created by: Jana Perkins Hernando High School Ch 11 Objectives 4.a.3. (Science - Grade(s): 9-12) Building blocks of matter (e.g., proton, neutron, and electron) and elementary particles

More information

Balancing Equations Notes

Balancing Equations Notes . Unit 6 Chemical Equations and Reactions What is a Chemical Equation? A Chemical Equation is a written representation of the process that occurs in a chemical reaction. A chemical equation is written

More information

Chapter 7 Chemical Reactions

Chapter 7 Chemical Reactions Chapter 7 Chemical Reactions Evidence of Chemical Change Release or Absorption of Heat Color Change Emission of Light Formation of a Gas Formation of Solid Precipitate Tro's "Introductory 2 How Do We Represent

More information

Science 1.8 AS Investigate selected chemical reactions WORKBOOK

Science 1.8 AS Investigate selected chemical reactions WORKBOOK Investigate selected chemical reactions WORKBOOK CONTENTS 1. Changing words into formula 2. Names to formula 3. Combination word and symbol equations 4. Thermal decomposition word and symbol equations

More information

Notes: Chemical Reactions. Diatomic elements: H 2, N 2, O 2, F 2, Cl 2, Br 2, I 2 I Bring Clay For Our New Hut OR HOBrFINCl

Notes: Chemical Reactions. Diatomic elements: H 2, N 2, O 2, F 2, Cl 2, Br 2, I 2 I Bring Clay For Our New Hut OR HOBrFINCl Name Chemistry-PreAP Notes: Chemical Reactions Period Review: Some elements do not occur as single atoms when uncombined with other elements. They will bond with themselves, forming a molecule. In any

More information

Chapter 7. Chemical Equations and Reactions

Chapter 7. Chemical Equations and Reactions Chemical Equations and Reactions Chemical and Physical Changes In a physical change, the chemical composition of the substance remains constant. Examples of physical changes are the melting of ice or the

More information

Unit Learning Targets (L.T.):

Unit Learning Targets (L.T.): Unit 9: Chemical Equations and Reactions Chapters 8 and 19 Name Block Unit Learning Targets (L.T.): By the end of the unit, students will be able to: Chapter 8: 1. Correctly write and balance chemical

More information

Name Date Class CHEMICAL REACTIONS. SECTION 11.1 DESCRIBING CHEMICAL REACTIONS (pages )

Name Date Class CHEMICAL REACTIONS. SECTION 11.1 DESCRIBING CHEMICAL REACTIONS (pages ) Name Date Class 11 CHEMICAL REACTIONS SECTION 11.1 DESCRIBING CHEMICAL REACTIONS (pages 321 329) This section explains how to write equations describing chemical reactions using appropriate symbols. It

More information

Chapter 6. Chemical Reactions. Sodium reacts violently with bromine to form sodium bromide.

Chapter 6. Chemical Reactions. Sodium reacts violently with bromine to form sodium bromide. Chapter 6 Chemical Reactions Sodium reacts violently with bromine to form sodium bromide. Evidence of Chemical Reactions Chemical Equations Reactants Products Reactant(s): Substance(s) present before the

More information

Unit IV: Chemical Equations & Stoichiometry

Unit IV: Chemical Equations & Stoichiometry Unit IV: Chemical Equations & Stoichiometry A. The chemical equation B. Types of chemical reactions A. Activity series of metals B. Solubility rules C. Rules for writing and balancing equations D. Calculations

More information

Name HONORS CHEMISTRY / / Oxide Reactions & Net Ionic Reactions

Name HONORS CHEMISTRY / / Oxide Reactions & Net Ionic Reactions Name HONORS CHEMISTRY / / Oxide Reactions & Net Ionic Reactions The first type of reactions we will look at today are reactions between an oxide (a compound with oxygen as its anion) and water. There are

More information

Chapter 4 Types of Chemical Reaction and Solution Stoichiometry

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

More information

Reactions in Aqueous Solution

Reactions in Aqueous Solution Reading Assignments: Reactions in Aqueous Solution Chapter 4 Chapter 4 in R. Chang, Chemistry, 9 th Ed., McGraw-Hill, 2006. or previous editions. Or related topics in other textbooks. Consultation outside

More information

Science 1206 Chemistry Unit #11

Science 1206 Chemistry Unit #11 Science 1206 Chemistry Unit #11 Types of Chemical Reactions Types of Chemical Reactions Five types of chemical reactions: Formation (synthesis) Decomposition Single Displacement Double Displacement Combustion

More information

Chemical reactions. Section Describing chemical reactions

Chemical reactions. Section Describing chemical reactions Chemical reactions Section 11.1 - Describing chemical reactions What are everyday examples of chemical reactions? How do you write a chemical equation in words? Chemical equations are like a recipe, telling

More information