Unit 456 Comprehensive Outline

1. Introduction to the Periodic Table

1.1 History of the Periodic Table

• Early attempts and contributions (Dobereiner, Newlands, Mendeleev)
• Development of the modern periodic table

1.2 Organization of Elements

• Atomic number as the organizing principle
• Periods and groups (families)
• Classification: metals, nonmetals, metalloids

1.3 Periodic Trends

• Electronegativity
• Atomic radius
• Ionization energy
• Metallic character

2. Chemical Bonding

2.1 Types of Chemical Bonds

• Ionic bonds: formation, properties
• Covalent bonds: shared electrons, properties
• Metallic bonds: electron sea model

2.2 Lewis Structures

• Drawing Lewis dot structures
• Octet rule and exceptions

2.3 Hybridization and Molecular Geometry

• Concept of hybrid orbitals (sp, sp2, sp3)
• VSEPR theory for predicting shapes
• Bond angles and molecular polarity

3. States of Matter

3.1 Properties of Solids, Liquids, and Gases

• Structural characteristics
• Compressibility, shape, and volume

3.2 Phase Changes

• Melting, freezing, vaporization, condensation, sublimation
• Phase diagrams

3.3 Intermolecular Forces

• London dispersion forces
• Dipole-dipole interactions
• Hydrogen bonding

3.4 Kinetic Molecular Theory

• Particle motion and energy
• Gas laws overview

4. Acids and Bases

4.1 Definitions of Acids and Bases

• Arrhenius definition
• Brønsted-Lowry definition
• Lewis definition

4.2 pH Scale

• Calculating pH and pOH
• Strong vs weak acids/bases

4.3 Acid-Base Reactions

• Neutralization reactions
• Buffer solutions

4.4 Titrations

• Principles and process
• Calculating concentrations from titration data

5. Chemical Reactions

5.1 Reaction Types

• Synthesis (combination)
• Decomposition
• Single replacement
• Double replacement
• Combustion

5.2 Balancing Chemical Equations

• Law of conservation of mass
• Practice with various reaction types

6. Stoichiometry

6.1 Mole Concept and Conversions

• Moles, molar mass, Avogadro’s number

6.2 Stoichiometric Calculations

• Using balanced equations for mole ratios
• Mass-to-mass, mass-to-mole, mole-to-mole calculations

6.3 Limiting Reactant and Percent Yield

• Identifying limiting reagents
• Calculating theoretical and actual yields

7. Thermochemistry

7.1 Heat Transfer and Enthalpy

• Endothermic and exothermic processes
• Enthalpy (ΔH) concept

7.2 Calorimetry

• Measuring heat changes experimentally
• Specific heat capacity calculations

7.3 Hess's Law

• Using Hess’s Law to find enthalpy changes

7.4 Energy and Chemical Reactions

• Bond energy concepts
• Energy diagrams

8. Electrochemistry

8.1 Redox Reactions

• Oxidation and reduction concepts
• Assigning oxidation numbers

8.2 Electrochemical Cells

• Galvanic (voltaic) cells
• Cell notation and standard electrode potentials

8.3 Electrolysis

• Principles and applications

8.4 Applications of Electrochemistry

• Batteries and fuel cells
• Corrosion and prevention methods