CourseCourseConceptConcept

CAIE IGCSE Chemistry 1.1.6 Effects of Temperature and Pressure on Questions

Connect gas volume and particle behaviour in CAIE IGCSE Chemistry Extended by distinguishing heating at constant pressure from conditions where the volume stays unchanged.

Syllabus
2026–2028
Course
Chemistry 0620

Exam points

  • At constant pressure, explain heating and expansion using faster particle motion and increased average separation.
  • When gas volume is held constant as temperature and pressure rise, distinguish increased particle speed from unchanged average separation.

CAIE IGCSE Chemistry 1.1.6 Effects of Temperature and Pressure on Questions question 1

[Maximum number: 1]

A gas is heated. The pressure is kept constant.
Which statement describes the behaviour of the particles in the gas?

A

The particles move faster and become closer together.

B

The particles move faster and become further apart.

C

The particles move more slowly and become closer together.

D

The particles move more slowly and become further apart.

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