The document contains statements from the Cambridge IGCSE Combined Science syllabus 0653 covering chemical reactions and rates of reaction. It states that students should be able to describe how concentration, particle size, catalysis and temperature affect the rate of reaction and explain the effects of temperature and concentration in terms of particle collisions. It also says students should be able to describe methods to investigate gas-evolving reactions, interpret rate data, and define catalysts as substances that increase reaction rates but remain unchanged.

1. 12/04/16
C7 Chemical reactionsC7 Chemical reactions
Syllabus statementsSyllabus statements
Statements from Cambridge IGCSE Combined Science syllabus 0653 (for exams in 2016 – 2018)

2. 7.1 Rate of reaction7.1 Rate of reaction
1. Describe the effect of concentration, particle
size, catalysis and temperature on the rate of
reaction.
4. Describe & explain the effects of temperature
and concentration in terms of collisions between
reacting particles (concept of activation energy
will not be examined).

3. 7.1 Rate of reaction7.1 Rate of reaction
2. Describe a practical method for investigating
the rate of a reaction involving gas evolution.
3. Interpret data obtained from experiments
concerned with rate of reaction.
5. Define catalyst as an agent which increases rate
of reaction but which remains unchanged.

4. 7.2 Redox7.2 Redox
1. Define oxidation and reduction in terms of
oxygen loss/gain, and identify such reactions from
given information.