# AP Chemistry. Mole, Molecular Formula Review One Mole = o This is Avogadro s number. Molar Mass: The mass of one mole of a substance in grams.

Size: px
Start display at page:

Download "AP Chemistry. Mole, Molecular Formula Review One Mole = o This is Avogadro s number. Molar Mass: The mass of one mole of a substance in grams."

Transcription

1 AP Chemistry Ms Ye Name Date Block Mole, Review One Mole = o This is Avogadro s number Molar Mass: The mass of one mole of a substance in grams Percent Composition: Identifies the elements present in a compound as a mass % of the total compound mass Practice: Molar Mass of Compound % Composition of Each Element PbO 2 Pb: 1 x = O: 2 x 1600 = mole PbO2 = grams PbO2 CrF 3 %Pb = %O= 100 = % Pb 100 = % O Al 2 (SO 4 ) 3 KNO 3 *Remember: multiply the subscripts when there is a parentheses

2 Molar Conversions: Show work using Dimensional Analysis! 1 How many grams are in 45 moles of sodium fluoride, NaF? 2 How many moles are in 983 grams of aluminum hydroxide, Al(OH)3? 3 How many molecules are there in 450 grams of sodium sulfate, Na2SO4? 4 How many grams are there in 75 x molecules of sulfuric acid, H2SO4?

3 Empirical/ Review Empirical = = Remember: the empirical and molecular formula can be the same! 1 Determine the empirical formula of the given molecular formulas below Empirical Empirical HgBr2 C2H6O C8H14 C3H6 2 Determine the molecular formula based on the information given a 8418 g/mol b c Empirical Empirical Empirical CH2 CaCl2 CH2O g/mol g/mol 3 A compound has an empirical formula of CF3 and a molar mass of g/mol What is the molecular formula of the compound?

4 Determining Empirical s from Mass Data Ex: Assume you have a sample that is 0504 g hydrogen and 400 g oxygen 1 Convert grams moles for each element 2 Simplify the mole ratio for each element by dividing each number (of moles) by the smallest # of moles 3 Use the smallest whole-number mole ratio as the subscripts for the empirical formula Practice: 1 A 5325 g sample of methyl benzoate, a compound used in the manufacture of perfumes, is found to contain 3758 g of carbon, 0316 g of hydrogen and 1251 g of oxygen What is the empirical formula of methyl benzoate? 2 A 2498g sample of an unknown compound was analyzed and found to contain 135 g Ca, 108 g O, and 0675 g H What is the empirical formula of the compound?

5 Determining Empirical s from Percent Composition Data: Ex: Determine the empirical formula for a compound containing 740% carbon (C), 865% hydrogen (H), and 173% nitrogen (N) by mass 1 Assume a 100 gram sample for the compound The percent composition of each element will then be equal to the mass of the element found in the 100 g sample 2 Convert grams moles for each element C: 74 = Assume a 100 g sample: C: 740 % 74 g C in 100 g sample H: 865 % 865 g H in 100 g sample N: 173% 173 g N in 100 g sample 3 Simplify the mole ratio for each element by dividing each number (of moles) by the smallest # of moles C: H: N: = = = 100 H: 865 = N: 173 = 4 Use the smallest whole-number mole ratio as the subscripts for the empirical formula C: 5 H: 7 N: 1 C 5 H 7 N Note: If the simplified mole ratios are not all whole numbers, multiply by the smallest factor that will produce whole number subscripts Practice: 1 A compound is found to contain 6352% iron and 3648% sulfur Determine the empirical formula 2 A combustion analysis determined that the molecule consisted of 545% carbon, 915% hydrogen, and 363% oxygen a Determine the empirical formula b Determine the molecular formula knowing that the molecular mass = 13216g/mol

6 Finding Empirical from Percent Composition Data what happens when your mole ratios aren t whole numbers? If when you divide all the # of moles by the smallest # of moles and your mole ratios end in: ~05 (1/2) ~33 (1/3), ~66 (2/3) ~025 (1/4), ~075 (3/4) Multiply all mole ratios by to get all whole numbers for your mole ratio Examples 3 A compound contains 2594% Nitrogen and 7406% oxygen by mass What is the empirical formula? 4 A 100 gram sample of a compound contains 722 grams of magnesium and 278 grams of nitrogen Determine the empirical formula

7 Balancing & Types of Reactions Review Types of Reactions: Synthesis: 2 or more elements combine to make a compound; Ex: 8 Fe + S8 8 FeS Decomposition: A compound breaks down into 2 or more simpler substances; Ex: 2 H2O 2 H2 + O2 Combustion: A compound containing carbon and hydrogen is burned in the presence of oxygen, and the products are carbon dioxide & water vapor Ex: CH4 + 2 O2 CO2 + 2 H2O Single Replacement: 1 element replaces another element in a compound; Ex: Zn + 2 HCl ZnCl2 + H2 Double Replacement: 2 elements of 2 different compounds switch places with one another; Ex: NaCl(aq) + AgNO3(aq) NaNO3(aq) + AgCl(s) Neutralization: A double replacement reaction that takes place when an acid and a base react to form a metal salt and water (This is also known as an Acid-Base Reaction) Ex: HCl + NaOH NaCl + H2O Chemical Reactions and Law of Conservation of Matter: Matter cannot be created or destroyed This means that you end up with the same number of atoms of each element that you started with in a chemical reaction We balance chemical reactions by adding coefficients in front of the reactants or products so that there are equal numbers of each element on both sides In balanced chemical reaction equations: the coefficients represent the relative number of moles of substance that is being reacted or produced Ex: Consider the balanced equation 2 H2 + 1 O2 2 H2O This equation can be read as 2 moles of H2 react with 1 mole of O2 to make 2 moles of H2O

8 PRACTICE: Balance the following reactions AND identify the reaction type Balanced Reaction Reaction Type 1) Cl2 (aq) + KBr (aq) KCl (aq) + Br2 (aq) 2) HgO (s) Hg (l) + O2 (g) 3) AlBr3 + K2SO4 Al2(SO4)3 + KBr 4) Al (s) + O2 (g) Al2O3 (s) 5) FeCl3 + NaOH Fe(OH)3 + NaCl 6) C3H8 (g) + O2 (g) CO2 (g) + H2O (g) 7) NaOH (aq) + HCl (aq) NaCl (aq) + H2O (aq) 8) H2O (l) + Fe (s) Fe2O3 (s) + H2 (g) 9) AgNO3 (aq) + Cu (s) Cu(NO3)2 (aq) + Ag (s) 10) KOH(aq) + H2SO4 (aq) H2O (l) + K2SO4(aq) 11) (NH4)2CO3 NH3 + CO2 + H2O 12) C7H16 (l) + O2 (g) CO2 (g) + H2O (l)

### 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

### Molecular vs. Empirical Formula Chemistry H 2 O H 2 O 2. NaCl

Molecular vs Empirical Formula Chemistry Name Block Read the information below and then answer the questions that follow Definitions: Molecular formula the total number of atoms of each element in a compound

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

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

### Chapter 7 - Chemical Reactions

Chapter 7 - Chemical Reactions Evidence of a Chemical Reaction If we could see the atoms and molecules that compose matter, we could easily identify a chemical reaction: Atoms combine with other atoms

### Chapter 3 Chemical Reactions and Equations

Chapter 3 Chemical Reactions and Equations Chemical Reactions Reactions involve rearrangement and exchange of atoms to produce new pure substances. Reactants Products Chemical Equations Shorthand way

### 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

### 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

### Funsheet 3.0 [WRITING & BALANCING EQUATIONS] Gu/R. 2017

Funsheet 3.0 [WRITING & BALANCING EQUATIONS] Gu/R. 2017 Balance the following chemical equations. Remember, it is not necessary to write "1" if the coefficient is one. 1. N 2 + H 2 NH 3 2. KClO 3 KCl +

### Molar Mass. The total of the atomic masses of all the atoms in a molecule:

Molar Mass The total of the atomic masses of all the atoms in a molecule: Ex: H 2 O H (1.0079) x 2 atoms = 2.0158 grams O (15.999) x 1 atom = 15.999 grams 18.0148 grams (18.0 grams) Ex: Cu(NO 3 ) 2 Cu

### 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

### (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

### 2 nd Semester Study Guide 2017

Chemistry 2 nd Semester Study Guide 2017 Name: KEY Unit 6: Chemical Reactions and Balancing 1. Draw the remaining product 2. Write a balanced equation for the following reaction: The reaction between sodium

### 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)

### 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

### Balancing Equations Notes

. Unit 9 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

### 2 nd Semester Study Guide 2016

Chemistry 2 nd Semester Study Guide 2016 Name: Unit 6: Chemical Reactions and Balancing 1. Draw the remaining product 2. Write a balanced equation for the following reaction: The reaction between sodium

### Phase Changes: A type of Physical Change

Chemistry Ms. Ye Name Date Block Changes we observe about matter can be categorized as either a physical or chemical change: Physical Change: a change in which the Chemical Change: a change in which the

### THE MOLE - PART 2. Multiple Choice Identify the letter of the choice that best completes the statement or answers the question.

THE MOLE - PART 2 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. Which one of the following statements is a quantitative observation? a.

### 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

### Chemical Reaction Defn: Chemical Reaction: when starting chemical species form different chemicals.

Chemistry 11 Notes on Chemical Reactions Chemical Reaction Defn: Chemical Reaction: when starting chemical species form different chemicals. Evidence to indicate that a chemical reaction has occurred:

### Solutions to the Extra Problems for Chapter 8

Solutions to the Extra Problems for Chapter 8. The answer is 83.4%. To figure out percent yield, you first have to determine what stoichiometry says should be made: Mass of MgCl 4.3 amu + 35.45 amu 95.

### 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

### 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

### 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

### 9. The ratio of the volume of nitrogen to that of the ammonia in the reaction N2 + 3 H2 2 NH3 is 1) 1:2; 2) 1:3; 3) 3:2; 4) 2:3.

1. In a balanced chemical equation l) coefficients are equal; 2) atoms are conserved; 3) molecules are equal; 4) energy is always produced; 5) none of these. 2. Which of the following statements about

### 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

### What is one of the spectator ions (with correct coefficient)? A)

Chem 101 Exam Fall 01 Section 001 1. Based on the solubility rules Mg (PO 4 ) is A) soluble B) insoluble. An aqueous solution of potassium sulfate is allowed to react with an aqueous solution of What is

### Multiple Choices: Choose the best (one) answer. Show in bold. Questions break-down: Chapter 8: Q1-8; Chapter 9: Q9-16: Chapter 10:

HCCS CHEM 1405 textbook PRACTICE EXAM III (Ch. 8-10) 5 th and 6 th edition of Corwin s The contents of these chapters are more calculation-oriented and are the beginning of learning of the chemical language.

### 1) Write the reaction for Calcium and nitrogen reacting. 3) What element on the periodic table is the largest? 3)Name these. a) H2S (aq) b) HNO 3 (aq)

1) Write the reaction for Calcium and nitrogen reacting 3) What element on the periodic table is the largest? 3)Name these a) H2S (aq) b) HNO 3 (aq) Stoichiometry: mathematical relationships in formulas

### Student Version Notes: Unit 5 Moles & Stoichiometry

Name: Regents Chemistry: Mr. Palermo Student Version Notes: Unit 5 Moles & Stoichiometry Name: KEY IDEAS A compound is a substance composed of two or more different elements that are chemically combined

### Chemical Reactions. Chemical Reactions 5 signs/evidence of chemical reactions:

Chemical Reactions Chemical Reactions 5 signs/evidence of chemical reactions: Chemical Reaction: a process in which one or more substances are converted into new substances with different chemical and

### Ch 3.3 Counting (p78) One dozen = 12 things We use a dozen to make it easier to count the amount of substances.

Ch 3.3 Counting (p78) One dozen = 12 things We use a dozen to make it easier to count the amount of substances. Moles the SI base unit that describes the amount of particles in a substance. Mole is abbreviated

### Unit 4. Multiple Choice Identify the choice that best completes the statement or answers the question.

Unit 4 Multiple Choice Identify the choice that best completes the statement or answers the question. 39. Changing a subscript in a correctly written chemical formula a. changes the number of moles represented

### Introduction to Chemical Reactions. Making new substances

Introduction to Chemical Reactions Making new substances Main Ideas Chemical Reactions are represented by Chemical Equations. Chemical Equations are balanced to show the same number of atoms of each element

### 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

### 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

### Chemical Reaction Defn: Chemical Reaction: when starting chemical species form different chemicals.

Chemical Reaction Defn: Chemical Reaction: when starting chemical species form different chemicals. Evidence to indicate that a chemical reaction has occurred: Temperature change Different coloured materials

### Chapter 3. Mass Relationships in Chemical Reactions

Chapter 3 Mass Relationships in Chemical Reactions In this chapter, Chemical structure and formulas in studying the mass relationships of atoms and molecules. To explain the composition of compounds and

### BICOL UNIVERSITY. College of Science Department of Chemistry. CHEM 1 GENERAL CHEMISTRY LECTURE HANDOUT Ver. 1.1 α

BICOL UNIVERSITY College of Science Department of Chemistry CHEM 1 GENERAL CHEMISTRY LECTURE HANDOUT Ver. 1.1 α 20110307 1 mole = 6.022 x 10 23 of molecules (Avogadro's number) A mole is similar to a term

### 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

### 7 Chemical Reactions and Quantities Practice Problems

7 Chemical Reactions and Quantities Practice Problems I m trying a different set up for the practice problems. This still contains the practice problems you need to master for the test. I ve organized

### 1) What is the volume of a tank that can hold Kg of methanol whose density is 0.788g/cm 3?

1) Convert the following 1) 125 g to Kg 6) 26.9 dm 3 to cm 3 11) 1.8µL to cm 3 16) 4.8 lb to Kg 21) 23 F to K 2) 21.3 Km to cm 7) 18.2 ml to cm 3 12) 2.45 L to µm 3 17) 1.2 m to inches 22) 180 ºC to K

### 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

### SCH4U Chemistry Review: Fundamentals

SCH4U Chemistry Review: Fundamentals Particle Theory of Matter Matter is anything that has mass and takes up space. Anything around us and in the entire universe can be classified as either matter or energy.

### 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

### 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

### 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),

### UNIT 9 - STOICHIOMETRY

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

### Unit Two Worksheet WS DC U2

Unit Two Worksheet WS DC U2 Name Period Short Answer [Writing]. Write skeleton equations representing the following reactions and then balance them. Then identify the reaction type. Include all needed

### Notes: Unit 7 Moles & Stoichiometry

Regents Chemistry: Notes: Unit 7 Moles & Stoichiometry 1 KEY IDEAS In all chemical reactions there is a conservation of mass, energy, and charge. (3.3a) A balanced chemical equation represents conservation

### 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

### MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Magnesium and nitrogen react in a combination reaction to produce magnesium nitride:

### Test bank chapter (3)

Test bank chapter (3) Choose the correct answer 1. What is the mass, in grams, of one copper atom? a) 1.055 10 - g b) 63.55 g c) 1 amu d) 1.66 10-4 g. Determine the number of moles of aluminum in 96.7

### Practice Packet Unit 7: Moles & Stoichiometry

PRACTICE PACKET: Unit 7 Moles & Stoichiometry Regents Chemistry: Practice Packet Unit 7: Moles & Stoichiometry Vocabulary: Lesson 1: Lesson 6: Lesson 2: Lesson 4A: Lesson 4B: Lesson 3: Lesson 5: www.chempride.weebly.com

### Worksheet 1: REPRESENTATIVE PARTICLES

Worksheet 1: REPRESENTATIVE PARTICLES Directions: For each substance below, state the representative particle. If the RP is a molecule, state the number of atoms that make up the molecule. If the RP is

### AP Chemistry Unit 1 Review Guide: IUPAC Naming, Stoichiometry, Solution Chemistry

I. IUPAC Naming AP Chemistry Unit 1 Review Guide: IUPAC Naming, Stoichiometry, Solution Chemistry For Ionic Compounds: Formula to Name: 1. Identify the cation (positive ion) by name, then identify the

### Mass Relationships in Chemical Reactions

Mass Relationships in Chemical Reactions Chapter 3 Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Micro World atoms & molecules Macro World grams Atomic mass

### Page 1. Exam 2 Review Summer A 2002 MULTIPLE CHOICE. 1. Consider the following reaction: CaCO (s) + HCl(aq) CaCl (aq) + CO (g) + H O(l)

Page 1 MULTIPLE CHOICE 1. Consider the following reaction: CaCO (s) + HCl(aq) CaCl (aq) + CO (g) + H O(l) The coefficient of HCl(aq) in the balanced reaction is. a) 1 b) 2 c) 3 d) 4 e) 0 2. Given the information

### MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) When the following equation is balanced, the coefficients are. 1) NH3 (g) + O2 (g) NO2

### UNIT 1 Chemical Reactions Part II Workbook. Name:

UNIT 1 Chemical Reactions Part II Workbook Name: 1 Molar Volume 1. How many moles of a gas will occupy 2.50 L at STP? 2. Calculate the volume that 0.881 mol of gas at STP will occupy. 3. Determine the

### 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

### 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

### CALCULATIONS AND CHEMICAL EQUATIONS ATOMIC MASS: MASS OF AN ATOM

CALCULATIONS AND CHEMICAL EQUATIONS ATOMIC MASS: MASS OF AN ATOM There is a unique relationship between molar mass and atomic weight: Oxygen's atomic weight is 16.00 amu. 1 mole of oxygen is 6.02 x 1023

### 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

### Lesson 13: Ionic Equations & Intro to the Mole with Conversions

NOTES Name: Date: Class: Lesson 13: Ionic Equations & Intro to the Mole with Conversions Box 1: Balance: 1. Mg + O2 MgO 2. KClO3 KCl + O2 3. C2H6 + O2 CO2 + H2O Write and balance the equation that represents

### Unit 9 Stoichiometry Notes

Unit 9 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 to

### TYPES OF CHEMICAL REACTIONS

TYPES OF CHEMICAL REACTIONS Precipitation Reactions Compounds Soluble Ionic Compounds 1. Group 1A cations and NH 4 + 2. Nitrates (NO 3 ) Acetates (CH 3 COO ) Chlorates (ClO 3 ) Perchlorates (ClO 4 ) Solubility

### CHAPTER 11. The Mole. Mole. One mole of = 6.02 x 10 = 6.02 x 10 CaCl = 6.02 x x 10. Representative Particle. molecules, or formula units

CHAPTER 11 The Mole 11.1 The Mole: Measurement of Matter Matter is measured in one of three ways: (How many?) Mole SI unit that measures the amount of a substance 6.02 x 10 particles of that substance.

### 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

### C2.6 Quantitative Chemistry Foundation

C2.6 Quantitative Chemistry Foundation 1. Relative masses Use the periodic table to find the relative masses of the elements below. (Hint: The top number in each element box) Hydrogen Carbon Nitrogen Oxygen

### Chemical Reactions Unit

Name: Hour: Teacher: ROZEMA / Chemistry Chemical Reactions Unit 1 P a g e 2 P a g e 3 P a g e 4 P a g e 5 P a g e 6 P a g e Chemistry Balancing Equations Balance the following equations by inserting the

### 2H 2 (g) + O 2 (g) 2H 2 O (g)

Mass A AP Chemistry Stoichiometry Review Pages Mass to Mass Stoichiometry Problem (Review) Moles A Moles B Mass B Mass of given Amount of given Amount of unknown Mass of unknown in grams in Moles in moles

### 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

### 1. Naming and Writing Formulas 2. Writing Chemical Equations 3. Balancing Reactions

Chemistry 11 Stoichiometry I Name: Date: Block: 1. Naming and Writing Formulas 2. Writing Chemical Equations 3. Balancing Reactions Naming and Writing Formulas Key Points for naming ionic compounds: Cations

### UNIT 5: MOLES & STOICHIOMETRY

*KEY* UNIT 5: MOLES & STOICHIOMETRY *KEY* VOCABULARY: 1. Mole 2. Formula mass (FM) 3. Gram formula mass (GFM) 4. Coefficient 5. Subscript 6. Species 7. Law of conservation of mass 8. Law of conservation

### 2. Relative molecular mass, M r - The relative molecular mass of a molecule is the average mass of the one molecule when compared with

Chapter 3: Chemical Formulae and Equations 1. Relative atomic mass, A r - The relative atomic mass of an element is the average mass of one atom of an element when compared with mass of an atom of carbon-12

### Honors text: Ch 10 & 12 Unit 06 Notes: Balancing Chemical Equations

Notes: Balancing Chemical Equations Effects of chemical reactions: Chemical reactions rearrange atoms in the reactants to form new products. The identities and properties of the products are completely

### Honors Chemistry - Unit 7 Chapter 11 Chemical Reactions

Honors Chemistry - Unit 7 Chapter 11 Chemical Reactions Vocab Assignment Due: Unit 7 Packet - Page 1 of 15 UT Quest(s): Quiz on Diatomic Molecules & Balancing: Prediction Quiz : Test Date: VOCABULARY Assignment

### 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

### AP Chemistry - Summer Assignment

AP Chemistry - Summer Assignment NOTE: a. MUST SHOW ALL WORK FOR CREDIT!! b. Where work is required, do on a separate sheet of paper c. These are the foundational things you should be able to do when you

### 2. Indicators of Chemical Rxns. Abbreviations of State (g) gas (l) liquid (s) solid (aq) aqueous a substance dissolved in water

Unit 6 Chemical Reactions 1. Parts of a Chemical Reaction 2. Indicators of a Chemical Reaction 3. Enthalpy 4. Balancing Chemical Equations 5. Word Equations 6. Classifying Chemical Reactions 7. Predicting

### Finding Formulas. using mass information about a compound to find its formula

Finding Formulas using mass information about a compound to find its formula Molecular Formula Molecular formula is the actual formula of compounds which form molecules. For example, the molecular formula

### General Chemistry Multiple Choice Questions Chapter 8

1 Write the skeleton chemical equation for the following word equation: Hydrochloric acid plus magnesium yields magnesium chloride and hydrogen gas. a HClO 4 + Mg --> MgClO 4 + H 2 b HClO 4 + Mg --> MgClO

### 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

### 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

### 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

### Honors Chemistry - Unit 7 Chapter 11 Chemical Reactions

Honors Chemistry - Unit 7 Chapter 11 Chemical Reactions Important Dates: Diatomics, Reaction Symbols, Balancing Quiz: January 4 th Unit 7 UT Quest (2 parts): Due11:58pm on January 8 th Unit 7 Packet -

### 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

### 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

### General Chemistry. Chapter 3. Mass Relationships in Chemical Reactions CHEM 101 (3+1+0) Dr. Mohamed El-Newehy 10/12/2017

General Chemistry CHEM 101 (3+1+0) Dr. Mohamed El-Newehy http://fac.ksu.edu.sa/melnewehy Chapter 3 Mass Relationships in Chemical Reactions 1 In this chapter, Chemical structure and formulas in studying

### E20: BALANCING EQUATIONS

E20: BALANCING EQUATIONS Before we can talk about balancing equations, we need to know how to READ an equation. We've already talked about symbols (like H or Na), and you should know how to read a formula

### Chapter 2: Mass Relations in Formulas, Chemical Reactions, and Stoichiometry

Previous Chapter Table of Contents Next Chapter Chapter 2: Mass Relations in Formulas, Chemical Reactions, and Stoichiometry Section 2.1: The Atomic Mass The atomic mass is the mass of 1 atom. Atoms are

### Review Exam 2. 2.What is the mass of 4 atom(s) of copper in grams? A) g B) g C) g D) g E) 4.

Review Exam 2 1.Naturally occurring element X exists in three isotopic forms: X-28 (27.977 amu, 92.23% abundance), X-29 (28.976 amu, 4.67% abundance), and X-30 (29.974 amu, 3.10% abundance). Calculate

### Chemistry. Bridging the Gap Summer Homework. Name..

Chemistry Bridging the Gap Summer Homework Name.. Standard Form Number Number in standard form 0.008 8 x 10-3 0.07 7 x 10-2 0.55 5.5 x 10-1 0.000052 0.048 0.0086 0.00086 0.000086 0.0000000001 0.000455

### Unit 5. Chemical reactions

Unit 5. Chemical reactions Index 1.- Physical and chemical phenomena...2 2.- What is a chemical reaction?...2 2.1. Chemical equation...2 2.2.- Balance of chemical reactions. Law of conservation of mass...3

### 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

### 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.

### Unit 5 Percent Composition, Empirical Formulas, and Reactions

Chemistry 1 West Linn High School Unit 5 Packet and Goals Name: Period: Unit 5 Percent Composition, Empirical Formulas, and Reactions Unit Goals: As you work through this unit, you should be able to: 1.