IGCSE Chemistry - Particles

States of Matter;

• Solid - the particles are closely packed together, and don't move..

• Liquid - gaps form between the particles as they move..

• Gas - particles are further apart, with almost no attraction between each other..

Inter-Conversions;

• Solid -> Liquid = Melting

• Solid -> Gas = Sublimation

• Liquid -> Solid = Freezing

• Liquid ->Gas = Boiling

• Gas -> Liquid = Condensation

Diffusion;

Diffusion is the spreading out of particles in a gas or liquid..

Diffusion can be proved using the following method:

If the lid is removed, the brown colour of the bromine diffuses upwards until both gas…