Large site - lots of Chemistry lesson plan resources . *4**4**1*MATTER*2**4**5*Measurement*6**4*  - Measurement with SI Units*4*  - Factor Label Method*4*  - Scientific Notation*4*  - Uncertainty in Measurement*4**4*The Nature of Matter*4*Elements*4*Comparing Compounds and Mixtures*4*Types of Mixtures*4*Separating Mixtures*1*PERIODIC TABLE*2*Development of the Periodic Table*4*The Organization of the Periodic Table*4*Trends in the Periodic Table*4*Families of Elements*1*FORMULAE/EQUATIONS*2*Analyzing Chemical Formulas*4*Characteristics of Chemical Reactions*4*Describing Reactions Using Chemical Equations*4*Types of Reactions*4*Conservation of Mass*4*The Mole Concept*4*Stoichiometry*1*EQUILIBRIUM*2*Collision Theory and Reaction Mechanisms*4*Energy and Entropy*4*Variables that Effect Reaction Rates*4*Equilibrium*4*Le Chatelier*apos*s Principle*1*ACIDS/BASES*2*Nature of Acids and Bases*4*The Identifying Properties of Acids and Bases*4*pH*4*Neutralization*4*Titration*4*Naming Acids and Bases*1*ORGANIC*2*The Nature of Carbon and Hydrocarbons*4*Structural Formulas and Isomers*4*Naming Hydrocarbons and Substituted Hydrocarbons*4*Organic Reactions*1*ATOMIC STRUCTURE*2*Early Theories of Matter*4*Modern Theories of Matter*4*Drawing Atomic Diagrams*4*Average Atomic Mass*1*BONDING*2*Chemical Bonds*4*Formula Writing*4*Naming Compounds*4*Naming Binary Covalent Compounds*4*Metallic Bonds and Intermolecular Forces*4*Comparing Ionic and Covalent Compounds*1*PHASES*2*Energy*4*Physical Phase*4*Phase Changes*4*Gas Laws*4*Assumptions of the Gas Laws*1*SOLUTIONS*2*Solutions: An Introduction*4*Quantities in Solutions*4*Colligative Propoerties*1*ELECTROCHEMISTRY*2*Competition for Electrons*4*Activity Series*4*Chemical Activity and Electricity*1*NUCLEAR*2*Nuclear Stability*4*Natural Radioactivity*4*Artificial Transmutation*4*Fission and Fusion*4*Half-Life*4*Radioisotopes*4**4*Site also has a large collection of laboratory worksheets/lessons.*4**4*Extremely useful for teachers of Chemistry.