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CAIE A-Level Chemistry AS 5.1.1 Chemical Reactions Are Accompanied By Enthalpy Questions

Practise identifying and explaining exothermic and endothermic reactions and their enthalpy changes using CAIE 9701 AS questions and mark schemes.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • Explain that chemical reactions are accompanied by enthalpy changes that may be exothermic or endothermic.

CAIE A-Level Chemistry AS 5.1.1 Chemical Reactions Are Accompanied By Enthalpy Questions question 1

[Maximum number: 1]

Which statement about enthalpy changes is correct?

A

Enthalpy changes of reaction are always negative.

B

Enthalpy changes of combustion are always positive.

C

Enthalpy changes of formation are always positive.

D

Enthalpy changes of neutralisation are always negative.

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