IGCSE Chemistry
2026 - 2028
Syllabus Checklist ✅
Topic 1: States of Matter and Diffusion
States of Matter
State the distinguishing properties of solids
, liquids
, and gases
Describe the structures of solids
, liquids
, and gases
in terms of particle separation
, arrangement
, and motion
Describe changes of state
in terms of melting
, boiling
, evaporating
, freezing
, and condensing
Describe the effects of temperature
and pressure
on the volume of a gas
Explain changes of state
in terms of kinetic particle theory
, including interpretation of heating and cooling curves
Explain, in terms of kinetic particle theory
, the effects of temperature
and pressure
on the volume of a gas
Diffusion
Describe and explain diffusion
in terms of kinetic particle theory
Describe and explain the effect of relative molecular mass
on the rate of diffusion
of gases
