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Periodic table
Structure of the periodic table
Metals and non-metals
Transition metals
Noble gases
Periodic trends
Matter
States and properties of matter
Characteristics of gases
Diffusion
Atomic structure
Electronic configuration and valency
Types of chemical reaction
Acids and bases
Neutral solutions
pH, titrations and indicators
Acid and base characteristics
Formation of salts
Reactivity series
Redox reactions
Electrochemical cell
Uses of salts
Corrosion
Extraction
Chemical reactions and the conservation of mass
Balancing equations
Reversible reactions
Endothermic and exothermic reactions
Energy changes in a reaction
Collision theory
Chemical reaction kinetics rates
International Union of Pure and Applied Chemistry (IUPAC)
Chemical formula
Word and chemical equations
Alkanes, alkenes, alcohols
Structural formulae – carboxylic acids and esters
Pure and impure substances
Solutions, colloids and suspensions
Filtration, distillation and chromatography
The atmosphere
Atmospheric composition
Emissions and environmental implications
Bonding
Structure and bonding
Properties of elements and compounds
Alloys
The mole concept and chemical calculations
Activation energy $E_a$
Activation energy ($E_a$) is the minimum amount of energy that reacting particles must have for a chemical reaction to start.