The formation of a gas is evidence of. 1. A chemical change. 2. A physical change. 3. No change in energy 4. Both (1) and (2)

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "The formation of a gas is evidence of. 1. A chemical change. 2. A physical change. 3. No change in energy 4. Both (1) and (2)"

Transcription

1 Chapter 8 Review

2 The formation of a gas is evidence of 1. A chemical change. 2. A physical change. 3. No change in energy 4. Both (1) and (2)

3 The formation of a gas is evidence of 1. A chemical change. 2. A physical change. 3. No change in energy 4. Both (1) and (2)

4 Which of the following may be evidence of a chemical change? 1. Release of energy as heat 2. Production of sound 3. Reduction in temperature 4. All of the above

5 Which of the following may be evidence of a chemical change? 1. Release of energy as heat 2. Production of sound 3. Reduction in temperature 4. All of the above

6 In the word equation, iron + copper (II) sulfate iron (II) sulfate + copper, a product is 1. Iron (II) sulfate. 2. Copper. 3. Iron. 4. both (1) and (2)

7 In the word equation, iron + copper (II) sulfate iron (II) sulfate + copper, a product is 1. Iron (II) sulfate. 2. Copper. 3. Iron. 4. both (1) and (2)

8 In the reaction described by the following equation water + energy hydrogen gas +oxygen gas, energy 1. Can be considered a reactant. 2. Is absorbed. 3. Is released. 4. Both (a) and (b)

9 In the reaction described by the following equation water + energy hydrogen gas +oxygen gas, energy 1. Can be considered a reactant. 2. Is absorbed. 3. Is released. 4. Both (a) and (b)

10 In the unbalanced formula equation carbon + hydrogen methane, the formula CH 4 represents 1. One atom of methane. 2. Five atoms of methane. 3. One molecule of methane. 4. One gram of methane.

11 In the unbalanced formula equation carbon + hydrogen methane, the formula CH 4 represents 1. One atom of methane. 2. Five atoms of methane. 3. One molecule of methane. 4. One gram of methane.

12 From a complete and correctly written chemical equation, you can obtain the 1. Chemical formulas of the reactants and products. 2. Relative amounts of the reactants and products 3. Physical state of the reactants and products. 4. All of the above.

13 From a complete and correctly written chemical equation, you can obtain the 1. Chemical formulas of the reactants and products. 2. Relative amounts of the reactants and products 3. Physical state of the reactants and products. 4. All of the above.

14 In a chemical equation, the formula of a substance in a solid state is followed by the symbol 1. (l) 2. (s) 3. (g) 4. (aq)

15 In a chemical equation, the formula of a substance in a solid state is followed 1. (l) 2. (s) 3. (g) 4. (aq) by the symbol

16 The Greek letter delta ( ) above the arrow in a chemical equation means 1. yields or produces. 2. a catalyst is used in the reaction. 3. the reaction releases energy as heat. 4. the reactants are heated.

17 The Greek letter delta ( ) above the arrow in a chemical equation means 1. yields or produces. 2. a catalyst is used in the reaction. 3. the reaction releases energy as heat. 4. the reactants are heated.

18 For which element(s) are the number of reactant atoms and products atoms equal, KBr + Cl 2 Br 2 + KCl 1. K 2. Cl 3. Br 4. All of the above

19 For which element(s) are the number of reactant atoms and products atoms equal, 1. K 2. Cl 3. Br 4. All of the above KBr + Cl 2 Br 2 + KCl

20 According to the law of conservation of mass, the total mass of the reacting substances is 1. Always more than the total mass of the products. 2. Always less than the total mass of the products. 3. Sometimes more and sometimes less than the total mass of the products. 4. Always equal to the total mass of the products.

21 According to the law of conservation of mass, the total mass of the reacting substances is 1. Always more than the total mass of the products. 2. Always less than the total mass of the products. 3. Sometimes more and sometimes less than the total mass of the products. 4. Always equal to the total mass of the products.

22 In the unbalanced formula equation, SrBr 2 + (NH 4 ) 2 CO 3 SrCO 3 + NH 4 Br which coefficient should be placed to the left of NH 4 Br?

23 In the unbalanced formula equation, SrBr 2 + (NH 4 ) 2 CO 3 SrCO 3 + NH 4 Br which coefficient should be placed to the left of NH 4 Br?

24 Which coefficients would be used to balance the following equation, SrBr 2 + (NH 4 ) 2 CO 3 SrCO 3 + NH 4 Br? 1. 1,2,1,1 2. 1,1,2,1 3. 1,1,1,2 4. 1,1,1,1

25 Which coefficients would be used to balance the following equation, SrBr 2 + (NH 4 ) 2 CO 3 SrCO 3 + NH 4 Br? 1. 1,2,1,1 2. 1,1,2,1 3. 1,1,1,2 4. 1,1,1,1

26 A synthesis reaction is the only type of chemical reaction that 1. Has only one reactant. 2. Can involve the oxidation of organic compounds. 3. Results in the formation of a single product. 4. Both (1) and (3).

27 A synthesis reaction is the only type of chemical reaction that 1. Has only one reactant. 2. Can involve the oxidation of organic compounds. 3. Results in the formation of a single product. 4. Both (1) and (3).

28 Which of the following equations represents a decomposition reaction? 1. 2Sb (s) + 3 I 2 (g) 2SbI 3 (s) 2. 2HgO (s) 2Hg (l) + O 2 (g) 3. FeS (s) + 2 HCl (aq) H 2 S (g) + FeCl 2 (aq) 4. Zn (s) + H 2 SO 4 (aq) ZnSO 4 (aq) + H 2 (g)

29 Which of the following equations represents a decomposition reaction? 1. 2Sb (s) + 3 I 2 (g) 2SbI 3 (s) 2. 2HgO (s) 2Hg (l) + O 2 (g) 3. FeS (s) + 2 HCl (aq) H 2 S (g) + FeCl 2 (aq) 4. Zn (s) + H 2 SO 4 (aq) ZnSO 4 (aq) + H 2 (g)

30 If a metal is placed in an ionic solution containing another metal and no reaction occurs, then the metal originally in the solution is 1. A halogen. 2. Higher on the activity series. 3. Not on the activity series. 4. A catalyst.

31 If a metal is placed in an ionic solution containing another metal and no reaction occurs, then the metal originally in the solution is 1. A halogen. 2. Higher on the activity series. 3. Not on the activity series. 4. A catalyst.

32 The reaction Pb(NO 3 ) 2 + 2KI PBI KNO 3 is a 1. Double displacement reaction. 2. Synthesis reaction. 3. Decomposition reaction. 4. Combustion reaction.

33 The reaction Pb(NO 3 ) 2 + 2KI PBI KNO 3 is a 1. Double displacement reaction. 2. Synthesis reaction. 3. Decomposition reaction. 4. Combustion reaction.

34 The reaction 2C 2 H 2 + 5O 2 4CO H 2 O is a 1. Combustion reaction. 2. Synthesis reaction. 3. Decomposition reaction. 4. Double-displacement reaction.

35 The reaction 2C 2 H 2 + 5O 2 4CO H 2 O is a 1. Combustion reaction. 2. Synthesis reaction. 3. Decomposition reaction. 4. Double-displacement reaction.

36 The reaction Mg + 2HCl H 2 + MgCl 2 is a 1. Synthesis reaction. 2. Decomposition reaction. 3. Single displacement reaction. 4. Double-displacement reaction.

37 The reaction Mg + 2HCl H 2 + MgCl 2 is a 1. Synthesis reaction. 2. Decomposition reaction. 3. Single displacement reaction. 4. Double-displacement reaction.

38 In the reaction Zn (s) + H 2 SO 4 (aq) ZnSO 4 (aq) + H 2 (g), what element has been displaced. 1. Zn 2. H 3. S 4. O

39 In the reaction Zn (s) + H 2 SO 4 (aq) ZnSO 4 (aq) + H 2 (g), what element has been displaced. 1. Zn 2. H 3. S 4. O

40 1. NaOH Based on solubility rules, which compound is insoluble? 2. Cu(NO 3 ) 2 3. Cu(OH) 2 4. All of the above

41 1. NaOH Based on solubility rules, which 2. Cu(NO 3 ) 2 3. Cu(OH) 2 4. All of the above compound is insoluble?

42 Which of the following ions are spectator ions? NaOH + Cu(NO 3 ) 2 Cu(OH) 2 + NaNO 3 1. Na + and OH - 2. Cu2 + and OH - 3. Na + and NO 3-4. Cu 2+ and NO 3 -

43 Which of the following ions are spectator ions? NaOH + Cu(NO 3 ) 2 Cu(OH) 2 + NaNO 3 1. Na + and OH - 2. Cu2 + and OH - 3. Na + and NO Cu 2+ and NO - 3

44 The net ionic equation for the reaction below is, NaOH + Cu(NO 3 ) 2 Cu(OH) 2 + NaNO 3 1. Na+ (aq) + NO 3- (aq) NaNO 3 (s) 2. Cu 2+ (aq) + 2OH - (aq) Cu(OH) 2 (s) 3. Cu 2+ (aq) + 2OH - (aq) NaNO 3 (s) 4. Na + (aq) + NO 3- (aq) Cu(OH) 2 (s)

45 The net ionic equation for the reaction below is, NaOH + Cu(NO 3 ) 2 Cu(OH) 2 + NaNO 3 1. Na+ (aq) + NO 3- (aq) NaNO 3 (s) 2. Cu 2+ (aq) + 2OH - (aq) Cu(OH) 2 (s) 3. Cu 2+ (aq) + 2OH - (aq) NaNO 3 (s) 4. Na + (aq) + NO 3- (aq) Cu(OH) 2 (s)

Chapter 8: Chemical Equations and Reactions

Chapter 8: Chemical Equations and Reactions Chapter 8: Chemical Equations and Reactions I. Describing Chemical Reactions A. A chemical reaction is the process by which one or more substances are changed into one or more different substances. A chemical

More information

Potassium + Chlorine. K(s) + Cl 2 (g) 2 KCl(s)

Potassium + Chlorine. K(s) + Cl 2 (g) 2 KCl(s) Types of Reactions Consider for a moment the number of possible chemical reactions. Because there are millions of chemical compounds, it is logical to expect that there are millions of possible chemical

More information

Chemical Equations and Chemical Reactions. Chapter 8.1

Chemical Equations and Chemical Reactions. Chapter 8.1 Chemical Equations and Chemical Reactions Chapter 8.1 Objectives List observations that suggest that a chemical reaction has taken place List the requirements for a correctly written chemical equation.

More information

Steps to Predicting the Products of Chemical Reactions. CP Chemistry

Steps to Predicting the Products of Chemical Reactions. CP Chemistry Steps to Predicting the Products of Chemical Reactions CP Chemistry TYPES OF REACTIONS REVIEW 2 NaNO 3 + PbO Pb(NO 3 ) 2 + Na 2 O C 2 H 4 O 2 + 2 O 2 2 CO 2 + 2 H 2 O ZnSO 4 + Li 2 CO 3 ZnCO 3 + Li 2 SO

More information

2. DECOMPOSITION REACTION ( A couple have a heated argument and break up )

2. DECOMPOSITION REACTION ( A couple have a heated argument and break up ) TYPES OF CHEMICAL REACTIONS Most reactions can be classified into one of five categories by examining the types of reactants and products involved in the reaction. Knowing the types of reactions can help

More information

Chapter 5. Chemical Reactions and Equations. Introduction. Chapter 5 Topics. 5.1 What is a Chemical Reaction

Chapter 5. Chemical Reactions and Equations. Introduction. Chapter 5 Topics. 5.1 What is a Chemical Reaction Introduction Chapter 5 Chemical Reactions and Equations Chemical reactions occur all around us. How do we make sense of these changes? What patterns can we find? 1 2 Copyright The McGraw-Hill Companies,

More information

Steps for balancing a chemical equation

Steps for balancing a chemical equation The Chemical Equation: A Chemical Recipe Dr. Gergens - SD Mesa College A. Learn the meaning of these arrows. B. The chemical equation is the shorthand notation for a chemical reaction. A chemical equation

More information

Chemistry B11 Chapter 4 Chemical reactions

Chemistry B11 Chapter 4 Chemical reactions Chemistry B11 Chapter 4 Chemical reactions Chemical reactions are classified into five groups: A + B AB Synthesis reactions (Combination) H + O H O AB A + B Decomposition reactions (Analysis) NaCl Na +Cl

More information

Unit 8: Chemical Reactions and Equations

Unit 8: Chemical Reactions and Equations 1 Chemical Reactions Unit 8: Chemical Reactions and Equations What are chemical reactions and how do they occur? How are chemical reactions classified? How are products of chemical reactions predicted?

More information

Balancing Chemical Equations Worksheet

Balancing Chemical Equations Worksheet Balancing Chemical Equations Worksheet Student Instructions 1. Identify the reactants and products and write a word equation. 2. Write the correct chemical formula for each of the reactants and the products.

More information

CHAPTER 8 Chemical Equations and Reactions

CHAPTER 8 Chemical Equations and Reactions CHAPTER 8 Chemical Equations and Reactions SECTION 1 Describing Chemical Reactions OBJECTIVES 1. List three observations that suggest that a chemical reaction has taken place. 2. List three requirements

More information

Chapter 7: Chemical Equations. Name: Date: Period:

Chapter 7: Chemical Equations. Name: Date: Period: Chapter 7: Chemical Equations Name: Date: Period: 7-1 What is a chemical reaction? Read pages 232-237 a) Explain what a chemical reaction is. b) Distinguish between evidence that suggests a chemical reaction

More information

Chemical Reactions 2 The Chemical Equation

Chemical Reactions 2 The Chemical Equation Chemical Reactions 2 The Chemical Equation INFORMATION Chemical equations are symbolic devices used to represent actual chemical reactions. The left side of the equation, called the reactants, is separated

More information

Word Equations and Balancing Equations. Video Notes

Word Equations and Balancing Equations. Video Notes Word Equations and Balancing Equations Video Notes In this lesson, you will: Use the law of conservation of mass and provide standard rules for writing and balancing equations. Write and balance equations

More information

Chemical Equations. Chemical Equations. Chemical reactions describe processes involving chemical change

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

More information

Worksheet # 11. 4. When heated, nickel (II) carbonate undergoes a decomposition reaction. Write a balanced equation to describe this reaction

Worksheet # 11. 4. When heated, nickel (II) carbonate undergoes a decomposition reaction. Write a balanced equation to describe this reaction Worksheet # 11 1. A solution of sodium chloride is mixed with a solution of lead (II) nitrate. A precipitate of lead (II) chloride results, leaving a solution of sodium nitrated. Determine the class of

More information

CHEM 110: CHAPTER 3: STOICHIOMETRY: CALCULATIONS WITH CHEMICAL FORMULAS AND EQUATIONS

CHEM 110: CHAPTER 3: STOICHIOMETRY: CALCULATIONS WITH CHEMICAL FORMULAS AND EQUATIONS 1 CHEM 110: CHAPTER 3: STOICHIOMETRY: CALCULATIONS WITH CHEMICAL FORMULAS AND EQUATIONS The Chemical Equation A chemical equation concisely shows the initial (reactants) and final (products) results of

More information

Chapter 4 An Introduction to Chemical Reactions. An Introduction to Chemistry by Mark Bishop

Chapter 4 An Introduction to Chemical Reactions. An Introduction to Chemistry by Mark Bishop Chapter 4 An Introduction to Chemical Reactions An Introduction to Chemistry by Mark Bishop Chapter Map Chemical Reaction A chemical change or chemical reaction is a process in which one or more pure substances

More information

Write chemical equations for the following reactions: Reactants Products Unbalanced. Water H 2 O. and

Write chemical equations for the following reactions: Reactants Products Unbalanced. Water H 2 O. and Chemical Equations 17.2 Chemical symbols provide us with a shorth method of writing the name of an element. Chemical formulas do the same for compounds. But what about chemical reactions? To write out,

More information

Chapter 9. Answers to Questions

Chapter 9. Answers to Questions Chapter 9 Answers to Questions 1. Word equation: Silicon Tetrachloride + Water Silicon Dioxide + Hydrogen Chloride Formulas: Next, the chemical formulas are needed. As these are all covalent compounds,

More information

Calculations and Chemical Equations. Example: Hydrogen atomic weight = 1.008 amu Carbon atomic weight = 12.001 amu

Calculations and Chemical Equations. Example: Hydrogen atomic weight = 1.008 amu Carbon atomic weight = 12.001 amu Calculations and Chemical Equations Atomic mass: Mass of an atom of an element, expressed in atomic mass units Atomic mass unit (amu): 1.661 x 10-24 g Atomic weight: Average mass of all isotopes of a given

More information

Tutorial 5 NET IONIC EQUATIONS

Tutorial 5 NET IONIC EQUATIONS T-33 Tutorial 5 NET IONIC EQUATIONS The efficiency and extent of a chemical reaction is very much dependent upon the physical state (solid, liquid, gas, or solution) of reactants and products. Not surprisingly,

More information

Science 1194 SAS Curriculum Pathways Chemical Equations: Journal

Science 1194 SAS Curriculum Pathways Chemical Equations: Journal Chemical Equations: Journal NAME: ray CLASS: chem90 DATE: 10/27/2013 FOCUS QUESTION: How and why are chemical equations balanced? TAB 1: Equations Read the questions below. Then complete this Journal by

More information

The 5 Types of Chemical Reactions (Chapter 11) By C B 6 th period

The 5 Types of Chemical Reactions (Chapter 11) By C B 6 th period The 5 Types of Chemical Reactions (Chapter 11) By C B 6 th period 1) Combination Reactions Is also referred to as a synthesis reaction It is a chemical change in which two or more substances react to form

More information

AP Chem Unit 1 Assignment 3 Chemical Equations

AP Chem Unit 1 Assignment 3 Chemical Equations Symbols used in chemical equations: Symbol Meaning + used to separate one reactant or product from another used to separate the reactants from the products - it is pronounced "yields" or "produces" when

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 I. Introduction A. Reactants 1. Original substances entering into a chemical rxn B. Products 1. The resulting substances from

More information

stoichiometry = the numerical relationships between chemical amounts in a reaction.

stoichiometry = the numerical relationships between chemical amounts in a reaction. 1 REACTIONS AND YIELD ANSWERS stoichiometry = the numerical relationships between chemical amounts in a reaction. 2C 8 H 18 (l) + 25O 2 16CO 2 (g) + 18H 2 O(g) From the equation, 16 moles of CO 2 (a greenhouse

More information

Unit 10A Stoichiometry Notes

Unit 10A Stoichiometry Notes Unit 10A Stoichiometry Notes Stoichiometry is a big word for a process that chemist s use to calculate amounts in reactions. It makes use of the coefficient ratio set up by balanced reaction equations

More information

Moles. Balanced chemical equations Molar ratios Mass Composition Empirical and Molecular Mass Predicting Quantities Equations

Moles. Balanced chemical equations Molar ratios Mass Composition Empirical and Molecular Mass Predicting Quantities Equations Moles Balanced chemical equations Molar ratios Mass Composition Empirical and Molecular Mass Predicting Quantities Equations Micro World atoms & molecules Macro World grams Atomic mass is the mass of an

More information

CHM-101-A Exam 2 Version 1 October 10, 2006

CHM-101-A Exam 2 Version 1 October 10, 2006 CHM-101-A Exam 2 Version 1 1. Which of the following statements is incorrect? A. SF 4 has ¼ as many sulfur atoms as fluorine atoms. B. Ca(NO 3 ) 2 has six times as many oxygen atoms as calcium ions. C.

More information

Writing and Balancing Chemical Equations

Writing and Balancing Chemical Equations Name Writing and Balancing Chemical Equations Period When a substance undergoes a chemical reaction, chemical bonds are broken and new bonds are formed. This results in one or more new substances, often

More information

1. P 2 O 5 2. P 5 O 2 3. P 10 O 4 4. P 4 O 10

1. P 2 O 5 2. P 5 O 2 3. P 10 O 4 4. P 4 O 10 Teacher: Mr. gerraputa Print Close Name: 1. A chemical formula is an expression used to represent 1. mixtures, only 3. compounds, only 2. elements, only 4. compounds and elements 2. What is the total number

More information

6 Reactions in Aqueous Solutions

6 Reactions in Aqueous Solutions 6 Reactions in Aqueous Solutions Water is by far the most common medium in which chemical reactions occur naturally. It is not hard to see this: 70% of our body mass is water and about 70% of the surface

More information

YIELD YIELD REACTANTS PRODUCTS

YIELD YIELD REACTANTS PRODUCTS Balancing Chemical Equations A Chemical Equation: is a representation of a chemical reaction in terms of chemical formulas Example: 1. Word Description of a Chemical Reaction When methane gas (CH 4 ) burns

More information

Writing, Balancing and Predicting Products of Chemical Reactions.

Writing, Balancing and Predicting Products of Chemical Reactions. Writing, Balancing and Predicting Products of Chemical Reactions. A chemical equation is a concise shorthand expression which represents the relative amount of reactants and products involved in a chemical

More information

Formulae, stoichiometry and the mole concept

Formulae, stoichiometry and the mole concept 3 Formulae, stoichiometry and the mole concept Content 3.1 Symbols, Formulae and Chemical equations 3.2 Concept of Relative Mass 3.3 Mole Concept and Stoichiometry Learning Outcomes Candidates should be

More information

Chemical Reactions Practice Test

Chemical Reactions Practice Test Chemical Reactions Practice Test Chapter 2 Name Date Hour _ Multiple Choice Identify the choice that best completes the statement or answers the question. 1. The only sure evidence for a chemical reaction

More information

Reactions. Balancing Chemical Equations uses Law of conservation of mass: matter cannot be lost in any chemical reaction

Reactions. Balancing Chemical Equations uses Law of conservation of mass: matter cannot be lost in any chemical reaction Reactions Chapter 8 Combustion Decomposition Combination Chapter 9 Aqueous Reactions Exchange reactions (Metathesis) Formation of a precipitate Formation of a gas Formation of a week or nonelectrolyte

More information

Chapter 4: Reactions in Aqueous Solution (Sections )

Chapter 4: Reactions in Aqueous Solution (Sections ) Chapter 4: Reactions in Aqueous Solution (Sections 4.1-4.12) Chapter Goals Be able to: Classify substances as electrolytes or nonelectrolytes. Write molecular, ionic, and net ionic equations for precipitation,

More information

Chapter 3. Stoichiometry: Ratios of Combination. Insert picture from First page of chapter. Copyright McGraw-Hill 2009 1

Chapter 3. Stoichiometry: Ratios of Combination. Insert picture from First page of chapter. Copyright McGraw-Hill 2009 1 Chapter 3 Insert picture from First page of chapter Stoichiometry: Ratios of Combination Copyright McGraw-Hill 2009 1 3.1 Molecular and Formula Masses Molecular mass - (molecular weight) The mass in amu

More information

Chem 1100 Chapter Three Study Guide Answers Outline I. Molar Mass and Moles A. Calculations of Molar Masses

Chem 1100 Chapter Three Study Guide Answers Outline I. Molar Mass and Moles A. Calculations of Molar Masses Chem 1100 Chapter Three Study Guide Answers Outline I. Molar Mass and Moles A. Calculations of Molar Masses B. Calculations of moles C. Calculations of number of atoms from moles/molar masses 1. Avagadro

More information

1. When the following equation is balanced, the coefficient of Al is. Al (s) + H 2 O (l)? Al(OH) 3 (s) + H 2 (g)

1. When the following equation is balanced, the coefficient of Al is. Al (s) + H 2 O (l)? Al(OH) 3 (s) + H 2 (g) 1. When the following equation is balanced, the coefficient of Al is. Al (s) + H 2 O (l)? Al(OH) (s) + H 2 (g) A) 1 B) 2 C) 4 D) 5 E) Al (s) + H 2 O (l)? Al(OH) (s) + H 2 (g) Al (s) + H 2 O (l)? Al(OH)

More information

[Mg] +2 [ S ] -2. HONORS Chemical Bonds and the Chemical Reactions Study Guide KEY

[Mg] +2 [ S ] -2. HONORS Chemical Bonds and the Chemical Reactions Study Guide KEY HONORS Chemical Bonds and the Chemical Reactions Study Guide KEY Complete the following problems to help prepare for the test. Objective 1: Students will know ionic and covalent bonding. 1. Which subatomic

More information

Chapter 11. Electrochemistry Oxidation and Reduction Reactions. Oxidation-Reduction Reactions. Oxidation-Reduction Reactions

Chapter 11. Electrochemistry Oxidation and Reduction Reactions. Oxidation-Reduction Reactions. Oxidation-Reduction Reactions Oxidation-Reduction Reactions Chapter 11 Electrochemistry Oxidation and Reduction Reactions An oxidation and reduction reaction occurs in both aqueous solutions and in reactions where substances are burned

More information

Chemical Calculations: Formula Masses, Moles, and Chemical Equations

Chemical Calculations: Formula Masses, Moles, and Chemical Equations Chemical Calculations: Formula Masses, Moles, and Chemical Equations Atomic Mass & Formula Mass Recall from Chapter Three that the average mass of an atom of a given element can be found on the periodic

More information

CHEMICAL REACTIONS. Chemistry 51 Chapter 6

CHEMICAL REACTIONS. Chemistry 51 Chapter 6 CHEMICAL REACTIONS A chemical reaction is a rearrangement of atoms in which some of the original bonds are broken and new bonds are formed to give different chemical structures. In a chemical reaction,

More information

NET IONIC EQUATIONS. A balanced chemical equation can describe all chemical reactions, an example of such an equation is:

NET IONIC EQUATIONS. A balanced chemical equation can describe all chemical reactions, an example of such an equation is: NET IONIC EQUATIONS A balanced chemical equation can describe all chemical reactions, an example of such an equation is: NaCl + AgNO 3 AgCl + NaNO 3 In this case, the simple formulas of the various reactants

More information

CHEMISTRY COMPUTING FORMULA MASS WORKSHEET

CHEMISTRY COMPUTING FORMULA MASS WORKSHEET CHEMISTRY COMPUTING FORMULA MASS WORKSHEET Directions: Find the formula mass of the following compounds. Round atomic masses to the tenth of a decimal place. Place your final answer in the FORMULA MASS

More information

Moles. Moles. Moles. Moles. Balancing Eqns. Balancing. Balancing Eqns. Symbols Yields or Produces. Like a recipe:

Moles. Moles. Moles. Moles. Balancing Eqns. Balancing. Balancing Eqns. Symbols Yields or Produces. Like a recipe: Like a recipe: Balancing Eqns Reactants Products 2H 2 (g) + O 2 (g) 2H 2 O(l) coefficients subscripts Balancing Eqns Balancing Symbols (s) (l) (aq) (g) or Yields or Produces solid liquid (pure liquid)

More information

Problem Set #10 - Answers

Problem Set #10 - Answers Problem Set #10 - Answers BIG IDEAS Fill in the blanks or circle the correct response in brackets. 1) When a reaction occurs, the stuff you start with is called the _reactants_ and the stuff you end up

More information

Chapter 6 Oxidation-Reduction Reactions. Section 6.1 2. Which one of the statements below is true concerning an oxidation-reduction reaction?

Chapter 6 Oxidation-Reduction Reactions. Section 6.1 2. Which one of the statements below is true concerning an oxidation-reduction reaction? Chapter 6 Oxidation-Reduction Reactions 1. Oxidation is defined as a. gain of a proton b. loss of a proton c. gain of an electron! d. loss of an electron e. capture of an electron by a neutron 2. Which

More information

Experiment 9 - Double Displacement Reactions

Experiment 9 - Double Displacement Reactions Experiment 9 - 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 information

Name: Teacher: Pd. Date:

Name: Teacher: Pd. Date: Name: Teacher: Pd. Date: STAAR Tutorial : Energy and Matter: Elements, Compounds, and Chemical Equations: 6.5C Differentiate between elements and compounds on the most basic level. 8.5F Recognize whether

More information

MOLE CONVERSION PROBLEMS. 2. How many moles are present in 34 grams of Cu(OH) 2? [0.35 moles]

MOLE CONVERSION PROBLEMS. 2. How many moles are present in 34 grams of Cu(OH) 2? [0.35 moles] MOLE CONVERSION PROBLEMS 1. What is the molar mass of MgO? [40.31 g/mol] 2. How many moles are present in 34 grams of Cu(OH) 2? [0.35 moles] 3. How many moles are present in 2.5 x 10 23 molecules of CH

More information

Chapter 7: Chemical Reactions

Chapter 7: Chemical Reactions Chapter 7 Page 1 Chapter 7: Chemical Reactions A chemical reaction: a process in which at least one new substance is formed as the result of a chemical change. A + B C + D Reactants Products Evidence that

More information

Chemical Reactions in Water Ron Robertson

Chemical Reactions in Water Ron Robertson Chemical Reactions in Water Ron Robertson r2 f:\files\courses\1110-20\2010 possible slides for web\waterchemtrans.doc Properties of Compounds in Water Electrolytes and nonelectrolytes Water soluble compounds

More information

Chemical Reactions in Water

Chemical Reactions in Water Chemical Reactions in Water Ron Robertson r2 f:\files\courses\1110-20\2010 possible slides for web\waterchemtrans.doc Acids, Bases and Salts Acids dissolve in water to give H + ions. These ions attach

More information

Chemistry Themed. Types of Reactions

Chemistry Themed. Types of Reactions Chemistry Themed Types of Reactions 1 2 Chemistry in the Community-2015-2016 Types of Reactions Date In-Class Assignment Homework T 10/20 TEST on Reactivity of Metals and Redox None W 10/21 Late Start

More information

Chemical Reactions. Chemistry 100. Bettelheim, Brown, Campbell & Farrell. Introduction to General, Organic and Biochemistry Chapter 4

Chemical Reactions. Chemistry 100. Bettelheim, Brown, Campbell & Farrell. Introduction to General, Organic and Biochemistry Chapter 4 Chemistry 100 Bettelheim, Brown, Campbell & Farrell Ninth Edition Introduction to General, Organic and Biochemistry Chapter 4 Chemical Reactions Chemical Reactions In a chemical reaction, one set 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. 1 7 8 12

More information

Elements, Compounds, subscript, superscript, coefficient Periodic Table o Periods, groups, etc. o Metals o Non-metals o Metalloids

Elements, Compounds, subscript, superscript, coefficient Periodic Table o Periods, groups, etc. o Metals o Non-metals o Metalloids Chemistry Elements, Compounds, subscript, superscript, coefficient Periodic Table o Periods, groups, etc. o Metals o Non-metals o Metalloids The patterns are related to the chemical properties of the element.

More information

Chemistry 51 Chapter 8 TYPES OF SOLUTIONS. A solution is a homogeneous mixture of two substances: a solute and a solvent.

Chemistry 51 Chapter 8 TYPES OF SOLUTIONS. A solution is a homogeneous mixture of two substances: a solute and a solvent. TYPES OF SOLUTIONS A solution is a homogeneous mixture of two substances: a solute and a solvent. Solute: substance being dissolved; present in lesser amount. Solvent: substance doing the dissolving; present

More information

Chemistry Final Study Guide

Chemistry Final Study Guide Name: Class: Date: Chemistry Final Study Guide Multiple Choice Identify the choice that best completes the statement or answers the question. 1. The electrons involved in the formation of a covalent bond

More information

H 2 + O 2 H 2 O. - Note there is not enough hydrogen to react with oxygen - It is necessary to balance equation.

H 2 + O 2 H 2 O. - Note there is not enough hydrogen to react with oxygen - It is necessary to balance equation. CEMICAL REACTIONS 1 ydrogen + Oxygen Water 2 + O 2 2 O reactants product(s) reactant substance before chemical change product substance after chemical change Conservation of Mass During a chemical reaction,

More information

Chemical Reactions - Chapter 2 - Review p #1-23; p. 81 #1-4 Science 8

Chemical Reactions - Chapter 2 - Review p #1-23; p. 81 #1-4 Science 8 Name KEY Date Hour Chemical Reactions - Chapter 2 - Review p. 79-80 #1-23; p. 81 #1-4 Science 8 Reviewing Key Terms Choose the letter of the best answer. 1. Which of the following is not a physical property?

More information

David A. Katz Chemist, Educator, Science Communicator, and Consultant Department of Chemistry, Pima Community College

David A. Katz Chemist, Educator, Science Communicator, and Consultant Department of Chemistry, Pima Community College WRITING CHEMICAL EQUATIONS 2004, 2002, 1989 by David A. Katz. All rights reserved. Permission for classroom used provided original copyright is included. David A. Katz Chemist, Educator, Science Communicator,

More information

Appendix D. Reaction Stoichiometry D.1 INTRODUCTION

Appendix D. Reaction Stoichiometry D.1 INTRODUCTION Appendix D Reaction Stoichiometry D.1 INTRODUCTION In Appendix A, the stoichiometry of elements and compounds was presented. There, the relationships among grams, moles and number of atoms and molecules

More information

Balancing Reaction Equations Oxidation State Reduction-oxidation Reactions

Balancing Reaction Equations Oxidation State Reduction-oxidation Reactions Balancing Reaction Equations Oxidation State Reduction-oxidation Reactions OCN 623 Chemical Oceanography Balanced chemical reactions are the math of chemistry They show the relationship between the reactants

More information

7-5.5. Translate chemical symbols and the chemical formulas of common substances to show the component parts of the substances including:

7-5.5. Translate chemical symbols and the chemical formulas of common substances to show the component parts of the substances including: 7-5.5 Translate chemical symbols and the chemical formulas of common substances to show the component parts of the substances including: NaCl [salt], H 2 O [water], C 6 H 12 O 6 [simple sugar], O 2 [oxygen

More information

Calculations with Chemical Reactions

Calculations with Chemical Reactions Calculations with Chemical Reactions Calculations with chemical reactions require some background knowledge in basic chemistry concepts. Please, see the definitions from chemistry listed below: Atomic

More information

Physical Changes and Chemical Reactions

Physical Changes and Chemical Reactions Physical Changes and Chemical Reactions Gezahegn Chaka, Ph.D., and Sudha Madhugiri, Ph.D., Collin College Department of Chemistry Objectives Introduction To observe physical and chemical changes. To identify

More information

3. Which of the following describes a conjugate acid-base pair for the following equilibrium? CN - (aq) + CH 3 NH 3 + (aq) H 2 CO 3 (aq) + H 2 O (l)

3. Which of the following describes a conjugate acid-base pair for the following equilibrium? CN - (aq) + CH 3 NH 3 + (aq) H 2 CO 3 (aq) + H 2 O (l) Acids, Bases & Redox 1 Practice Problems for Assignment 8 1. A substance which produces OH ions in solution is a definition for which of the following? (a) an Arrhenius acid (b) an Arrhenius base (c) a

More information

2. The percent yield is the maximum amount of product that can be produced from the given amount of limiting reactant.

2. The percent yield is the maximum amount of product that can be produced from the given amount of limiting reactant. UNIT 6 stoichiometry practice test True/False Indicate whether the statement is true or false. moles F 1. The mole ratio is a comparison of how many grams of one substance are required to participate in

More information

Name Date Class STOICHIOMETRY. SECTION 12.1 THE ARITHMETIC OF EQUATIONS (pages 353 358)

Name Date Class STOICHIOMETRY. SECTION 12.1 THE ARITHMETIC OF EQUATIONS (pages 353 358) Name Date Class 1 STOICHIOMETRY SECTION 1.1 THE ARITHMETIC OF EQUATIONS (pages 353 358) This section explains how to calculate the amount of reactants required or product formed in a nonchemical process.

More information

SAMPLE PROBLEM 8.1. Solutions of Electrolytes and Nonelectrolytes SOLUTION STUDY CHECK

SAMPLE PROBLEM 8.1. Solutions of Electrolytes and Nonelectrolytes SOLUTION STUDY CHECK Solutions of Electrolytes and Nonelectrolytes SAMPLE PROBLEM 8.1 Indicate whether solutions of each of the following contain only ions, only molecules, or mostly molecules and a few ions: a. Na 2 SO 4,

More information

Chemical calculations

Chemical calculations Chemical calculations Stoichiometry refers to the quantities of material which react according to a balanced chemical equation. Compounds are formed when atoms combine in fixed proportions. E.g. 2Mg +

More information

Balancing Chemical Equations Practice

Balancing Chemical Equations Practice Science Objectives Students will describe what reactants and products in a chemical equation mean. Students will explain the difference between coefficients and subscripts in chemical equations. Students

More information

Chapter 3 Stoichiometry: Calculations with Chemical Formulas and Equations

Chapter 3 Stoichiometry: Calculations with Chemical Formulas and Equations CHE11 Chapter Chapter Stoichiometry: Calculations with Chemical Formulas and Equations 1. When the following equation is balanced, the coefficients are. NH (g) + O (g) NO (g) + H O (g) (a). 1, 1, 1, 1

More information

Chapter 6 Notes Science 10 Name:

Chapter 6 Notes Science 10 Name: 6.1 Types of Chemical Reactions a) Synthesis (A + B AB) Synthesis reactions are also known as reactions. When this occurs two or more reactants (usually elements) join to form a. A + B AB, where A and

More information

IB Chemistry. DP Chemistry Review

IB Chemistry. DP Chemistry Review DP Chemistry Review Topic 1: Quantitative chemistry 1.1 The mole concept and Avogadro s constant Assessment statement Apply the mole concept to substances. Determine the number of particles and the amount

More information

Calculating Atoms, Ions, or Molecules Using Moles

Calculating Atoms, Ions, or Molecules Using Moles TEKS REVIEW 8B Calculating Atoms, Ions, or Molecules Using Moles TEKS 8B READINESS Use the mole concept to calculate the number of atoms, ions, or molecules in a sample TEKS_TXT of material. Vocabulary

More information

Molecular Formula: Example

Molecular Formula: Example Molecular Formula: Example A compound is found to contain 85.63% C and 14.37% H by mass. In another experiment its molar mass is found to be 56.1 g/mol. What is its molecular formula? 1 CHAPTER 3 Chemical

More information

Chapter 6: Writing and Balancing Chemical Equations. AB A + B. CaCO3 CaO + CO2 A + B C. AB + C AC + B (or AB + C CB + A)

Chapter 6: Writing and Balancing Chemical Equations. AB A + B. CaCO3 CaO + CO2 A + B C. AB + C AC + B (or AB + C CB + A) 78 Chapter 6: Writing and Balancing Chemical Equations. It is convenient to classify chemical reactions into one of several general types. Some of the more common, important, reactions are shown below.

More information

Chapter 5, Calculations and the Chemical Equation

Chapter 5, Calculations and the Chemical Equation 1. How many iron atoms are present in one mole of iron? Ans. 6.02 1023 atoms 2. How many grams of sulfur are found in 0.150 mol of sulfur? [Use atomic weight: S, 32.06 amu] Ans. 4.81 g 3. How many moles

More information

Chapter 5 Chemical Quantities and Reactions. Collection Terms. 5.1 The Mole. A Mole of a Compound. A Mole of Atoms.

Chapter 5 Chemical Quantities and Reactions. Collection Terms. 5.1 The Mole. A Mole of a Compound. A Mole of Atoms. Chapter 5 Chemical Quantities and Reactions 5.1 The Mole Collection Terms A collection term states a specific number of items. 1 dozen donuts = 12 donuts 1 ream of paper = 500 sheets 1 case = 24 cans 1

More information

EXPERIMENT 7 Reaction Stoichiometry and Percent Yield

EXPERIMENT 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 information

Chapter 3. Chemical Reactions and Reaction Stoichiometry. Lecture Presentation. James F. Kirby Quinnipiac University Hamden, CT

Chapter 3. Chemical Reactions and Reaction Stoichiometry. Lecture Presentation. James F. Kirby Quinnipiac University Hamden, CT Lecture Presentation Chapter 3 Chemical Reactions and Reaction James F. Kirby Quinnipiac University Hamden, CT The study of the mass relationships in chemistry Based on the Law of Conservation of Mass

More information

GHW#9. Louisiana Tech University, Chemistry 100. POGIL Exercise on Chapter 4. Quantities of Reactants and Products: Equations, Patterns and Balancing

GHW#9. Louisiana Tech University, Chemistry 100. POGIL Exercise on Chapter 4. Quantities of Reactants and Products: Equations, Patterns and Balancing GHW#9. Louisiana Tech University, Chemistry 100. POGIL Exercise on Chapter 4. Quantities of Reactants and Products: Equations, Patterns and Balancing Why? In chemistry, chemical equations represent changes

More information

Chapter 12: Oxidation and Reduction.

Chapter 12: Oxidation and Reduction. 207 Oxidation- reduction (redox) reactions Chapter 12: Oxidation and Reduction. At different times, oxidation and reduction (redox) have had different, but complimentary, definitions. Compare the following

More information

Liquid phase. Balance equation Moles A Stoic. coefficient. Aqueous phase

Liquid phase. Balance equation Moles A Stoic. coefficient. Aqueous phase STOICHIOMETRY Objective The purpose of this exercise is to give you some practice on some Stoichiometry calculations. Discussion The molecular mass of a compound is the sum of the atomic masses of all

More information

BALANCING CHEMICAL EQUATIONS

BALANCING CHEMICAL EQUATIONS BALANCING CHEMICAL EQUATIONS The Conservation of Matter states that matter can neither be created nor destroyed, it just changes form. If this is the case then we must account for all of the atoms in a

More information

CHAPTER 4. AQUEOUS REACTION CHEMISTRY

CHAPTER 4. AQUEOUS REACTION CHEMISTRY CAPTER. AQUEOUS REACTION CEMISTRY solution - homogeneous mixture of or more substances; uniform distribution of particles and same properties throughout. A solution is composed of a solute dissolved in

More information

Chapter 3: Stoichiometry

Chapter 3: Stoichiometry Chapter 3: Stoichiometry Key Skills: Balance chemical equations Predict the products of simple combination, decomposition, and combustion reactions. Calculate formula weights Convert grams to moles and

More information

SCH 4C1 Unit 2 Problem Set Questions taken from Frank Mustoe et all, "Chemistry 11", McGraw-Hill Ryerson, 2001

SCH 4C1 Unit 2 Problem Set Questions taken from Frank Mustoe et all, Chemistry 11, McGraw-Hill Ryerson, 2001 SCH 4C1 Unit 2 Problem Set Questions taken from Frank Mustoe et all, "Chemistry 11", McGraw-Hill Ryerson, 2001 1. A small pin contains 0.0178 mol of iron. How many atoms of iron are in the pin? 2. A sample

More information

Aqueous Solutions. Water is the dissolving medium, or solvent. Some Properties of Water. A Solute. Types of Chemical Reactions.

Aqueous Solutions. Water is the dissolving medium, or solvent. Some Properties of Water. A Solute. Types of Chemical Reactions. Aqueous Solutions and Solution Stoichiometry Water is the dissolving medium, or solvent. Some Properties of Water Water is bent or V-shaped. The O-H bonds are covalent. Water is a polar molecule. Hydration

More information

Chemical Formulas, Equations, and Reactions Test Pre-AP Write all answers on your answer document.

Chemical Formulas, Equations, and Reactions Test Pre-AP Write all answers on your answer document. Name: Period: Chemical Formulas, Equations, and Reactions Test Pre-AP Write all answers on your answer document. 1. Which of the following is a NOT a physical property of hydrogen? A. It is gas C. It is

More information

HOMEWORK 4A. Definitions. Oxidation-Reduction Reactions. Questions

HOMEWORK 4A. Definitions. Oxidation-Reduction Reactions. Questions HOMEWORK 4A Oxidation-Reduction Reactions 1. Indicate whether a reaction will occur or not in each of following. Wtiring a balcnced equation is not necessary. (a) Magnesium metal is added to hydrochloric

More information

Unit 6 The Mole Concept

Unit 6 The Mole Concept Chemistry Form 3 Page 62 Ms. R. Buttigieg Unit 6 The Mole Concept See Chemistry for You Chapter 28 pg. 352-363 See GCSE Chemistry Chapter 5 pg. 70-79 6.1 Relative atomic mass. The relative atomic mass

More information

Experiment 5. Chemical Reactions A + X AX AX A + X A + BX AX + B AZ + BX AX + BZ

Experiment 5. Chemical Reactions A + X AX AX A + X A + BX AX + B AZ + BX AX + BZ Experiment 5 Chemical Reactions OBJECTIVES 1. To observe the various criteria that are used to indicate that a chemical reaction has occurred. 2. To convert word equations into balanced inorganic chemical

More information

Experiment 8 - Double Displacement Reactions

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

More information