Free Chemistry Content

Essential Ideas

  • What is Chemistry?
  • Phases
  • Classification of Matter
  • Physical and Chemical Properties
  • Measurements
  • Accuracy and Precision

Atoms, Molecules, and Ions

Substances and Solutions

Stoichiometry

  • Writing and Balancing Equations
  • Classifying Reactions
  • Reaction Stoichiometry
  • Percent Yield
  • Quantitative Chemical Analysis

Thermochemistry

  • Energy Basics
  • Calorimetry
  • Enthalpy
  • First Law of Thermodynamics
  • Second Law of Thermodynamics
  • Third Law of Thermodynamics

Liquids and Solids

  • Intermolecular Forces
  • Properties of Liquids
  • Phase Transitions
  • Phase Diagrams
  • The Solid State
  • Lattice Structures

Nuclear Chemistry

  • Nuclear Equations
  • Radioactive Decay
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Electronic Structure and Periodic Properties

  • Electromagnetic Energy
  • The Bohr Model
  • Quantum Theory
  • Electron Configuration
  • Periodic Trends

Bonding and Molecular Geometry

  • Ionic Bonding
  • Covalent Bonding
  • Lewis Structures
  • Formal Charges and Resonance
  • Bonding Strength
  • Molecular Structure and Polarity

Advanced Covalent Bonding

  • Valence Bond Theory
  • Hybrid Atomic Orbitals
  • Multiple Bonds
  • Molecular Orbital Theory

Gases

  • Gas Pressure
  • Pressure, Volume, Temperature
  • Stoichiometry with Gases
  • Effusion and Diffusion
  • Kinetic-Molecular Theory
  • Non-Ideal Gases
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Solutions and Colloids

  • The Dissolution
  • Electrolytes
  • Solubility
  • Colligative Properties
  • Colloids

Kinetics

  • Reaction Rates
  • Rate Laws
  • Collision Theory
  • Reaction Mechanisms
  • Catalysis

Equilibrium

  • Chemical Equilibria
  • Equilibrium Constants
  • LaChatelier's Principles
  • Equilibrium Calculations

Acid-Base Equilibria

  • Bronsted-Lowry Acids and Bases
  • pH and pOH
  • Strengths of Acids and Bases
  • Hydrolysis of Salt Solutions
  • Polyprotic Acids
  • Buffers
  • Titrations

Thermodynamics

  • Spontaneity
  • Entropy
  • Second and Third Laws of Thermodynamics
  • Free Energy

Electrochemistry

  • Oxidation-Reduction Reactions
  • Galvanic Cells
  • Reduction Potentials
  • Nernst Equations
  • Batteries
  • Corrosion
  • Electrolysis

Metals, Metalloids, Nonmetals

  • Properties of Metals
  • Properties of Nonmetals
  • Compounds of Hydrogen
  • Carbonates
  • Compounds with Nitrogen, Oxygen, Sulfur, Phosphorous
  • Halogens and Noble Gases
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