Chemistry Essentials For Dummies®

Table of Contents

Introduction

About This Book

Conventions Used in This Book

Foolish Assumptions

Icons Used in This Book

Where to Go from Here

Chapter 1: Matter and Energy: Exploring the Stuff of Chemistry

Knowing the States of Matter and Their Changes

Solids, liquids, and gases

Condensing and freezing

Melting and boiling

Skipping liquids: Sublimation

Pure Substances and Mixtures

Pure substances

Throwing mixtures into the mix

Measuring Matter

Nice Properties You’ve Got There

Energy Types

Kinetic energy

Potential energy

Temperature and Heat

Chapter 2: What’s In an Atom?

Subatomic Particles

Centering on the Nucleus

Locating Those Electrons

The quantum mechanical model

Energy level diagrams

Isotopes and Ions

Isotopes: Varying neutrons

Ions: Varying electrons

Chapter 3: The Periodic Table

Repeating Patterns: The Modern Periodic Table

Arranging Elements in the Periodic Table

Grouping metals, nonmetals, and metalloids

Arranging elements by families and periods

Chapter 4: Nuclear Chemistry

Seeing How the Atom’s Put Together

Dealing with a Nuclear Breakup: Balancing Reactions

Understanding Types of Natural Radioactive Decay

Alpha emission

Beta emission

Gamma emission

Positron emission

Electron capture

Half-Lives and Radioactive Dating

Calculating remaining radioactivity

Radioactive dating

Breaking Elements Apart with Nuclear Fission

Mass defect: Where does all that energy come from?

Chain reactions and critical mass

Coming Together with Nuclear Fusion

Chapter 5: Ionic Bonding

Forming Ions: Making Satisfying Electron Trades

Gaining and losing electrons

Looking at charges on single-atom ions

Grouping atoms to form polyatomic ions

Creating Ionic Compounds

Making the bond: Sodium metal + chlorine gas = sodium chloride

Figuring out the formulas of ionic compounds

Naming ionic compounds

Bonding Clues: Electrolytes and Nonelectrolytes

Chapter 6: Covalent Bonding

Covalent Bond Basics

Sharing electrons: A hydrogen example

Comparing covalent bonds with other bonds

Dealing with multiple bonds

Naming Covalent Compounds Made of Two Elements

Writing Covalent Compound Formulas

Empirical formulas

Molecular or true formulas

Structural formulas: Dots and dashes

Electronegativities: Which Atoms Have More Pull?

Predicting the type of bond

Polar covalent bonding: Creating partial charges

Attracting other molecules: Intermolecular forces

Chapter 7: Chemical Reactions

Reactants and Products: Reading Chemical Equations

Collision Theory: How Reactions Occur

Hitting the right spot

Adding, releasing, and absorbing energy

Types of Reactions

Combination reactions: Coming together

Decomposition reactions: Breaking down

Single displacement reactions: Kicking out another element

Double displacement reactions: Trading places

Combustion reactions: Burning

Redox reactions: Exchanging electrons

Balancing Chemical Equations

Balancing the Haber process

Balancing the burning of butane

Knowing Chemical Equilibrium Backwards and Forwards

Matching rates of change in the Haber process

Constants: Comparing amounts of products and reactants

Le Chatelier’s Principle: Getting More (or Less) Product

Changing the concentration

Changing the temperature

Changing the pressure

Chemical Kinetics: Changing Reaction Speeds

Seeing How Catalysts Speed Up Reactions

Heterogeneous catalysis: Giving reactants a better target

Homogeneous catalysis: Offering an easier path

Chapter 8: Electrochemistry: Using Electrons

Transferring Electrons with Redox Reactions

Oxidation

Reduction

One’s loss is the other’s gain

Oxidation numbers

Balancing Redox Equations

Exploring Electrochemical Cells

Galvanic cells: Getting electricity from chemical reactions

Electrolytic cells: Getting chemical reactions from electricity

Having it both ways with rechargeable batteries

Chapter 9: Measuring Substances with the Mole

Counting by Weighing

Moles: Putting Avogadro’s Number to Good Use

Defining the mole

Calculating weight, particles, and moles

Finding formulas of compounds

Chemical Reactions and Moles

Reaction stoichiometry

Percent yield

Limiting reactants

Chapter 10: A Salute to Solutions

Mixing Things Up with Solutes, Solvents, and Solutions

How dissolving happens

Concentration limits

Saturated facts

Understanding Solution Concentration Units

Percent composition

Molarity: Comparing solute to solution

Molality: Comparing solute to solvent

Parts per million

Chapter 11: Acids and Bases

Observing Properties of Acids and Bases

The Brønsted-Lowry Acid-Base Theory

Understanding Strong and Weak Acids and Bases

Strong: Ionizing all the way

Weak: Ionizing partially

Acid-Base Reactions: Using the Brønsted-Lowry System

Acting as either an acid or base: Amphoteric water

Showing True Colors with Acid-Base Indicators

Doing a quick color test with litmus paper

Phenolphthalein: Finding concentration with titration

Phun with the pH Scale

Chapter 12: Clearing the Air on Gases

The Kinetic Molecular Theory: Assuming Things about Gases

Relating Physical Properties with Gas Laws

Boyle’s law: Pressure and volume

Charles’s law: Volume and temperature

Gay-Lussac’s Law: Pressure and temperature

The combined gas law: Pressure, volume, and temp.

Avogadro’s Law: The amount of gas

The ideal gas equation: Putting it all together

Chapter 13: Ten Serendipitous Discoveries in Chemistry

Archimedes: Streaking Around

Vulcanization of Rubber

Molecular Geometry

Mauve Dye

Kekulé: The Beautiful Dreamer

Discovering Radioactivity

Finding Really Slick Stuff: Teflon

Stick ’Em Up! Sticky Notes

Growing Hair

Sweeter Than Sugar