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CAIE IGCSE Chemistry Exothermic Reactions and Temperature

Practise identifying exothermic changes from heat transfer to the surroundings, a temperature rise and familiar examples such as combustion or neutralisation.

Syllabus
2026–2028
Course
Chemistry 0620

Exam points

  • state that an exothermic reaction transfers thermal energy to the surroundings
  • identify exothermic change from a temperature rise and compare changes using measured data
  • recognise combustion, neutralisation and selected hydration reactions as exothermic

5.1.1—An exothermic reaction transfers question 1

[Maximum number: 1]

When an acid is added to an alkali, the temperature of the reaction mixture rises.
Which words describe this reaction?

A

decomposition and endothermic

B

decomposition and exothermic

C

neutralisation and endothermic

D

neutralisation and exothermic

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