Factors which affect the rates of chemical reactions (5.6.1.2) | AQA GCSE Combined Science: Trilogy (8464) — Chemistry — Higher

5.6.1.2 Factors which affect the rates of chemical reactions

Content	Key opportunities for skills development
$Factors which affect the rates of chemical reactions include: the concentrations of reactants in solution, the pressure of reacting gases, the surface area of solid reactants, the temperature and the presence of catalysts.$
$Students should be able to recall how changing these factors affects the rate of chemical reactions.$	$This topic offers opportunities for practical work and investigations in addition to required practical 11.$

Required practical activity 11: investigate how changes in concentration affect the rates of reactions by a method involving measuring the volume of a gas produced and a method involving a change in colour or turbidity.

This should be an investigation involving developing a hypothesis.

AT skills covered by this practical activity: chemistry AT 1, 3, 5 and 6.

Factors which affect the rates of chemical reactions