Chemical Reactions & Equations

High trendapprox. 6 marksSections B/C — balancing equations, identifying reaction types and one redox example.

Notesformulae · proofs · mind-map — one view

Learn the 5 conceptsteach yourself first, then practise each

Balancing chemical equations1–2 marks Visual

Balance atoms one element at a time, then check overall.

Types of reactions (combination, decomposition, displacement, double displacement)1–2 marks Visual

Identify the type from the form of reactants and products.

Exothermic and endothermic reactions1–2 marks

Say whether heat is released (burning, respiration, quicklime + water) or absorbed (decomposition by heat, light or electricity).

Oxidation and reduction (redox)2–3 marks Visual

Mark which species gains/loses oxygen or hydrogen.

Effects of oxidation in daily life (corrosion)1–2 marks

Quick recall question — name the effect on a metal and a prevention method.

When you’re ready — practise or test the whole topic