The Kinetic Theory of Matter (Leaving Cert Chemistry): Flashcards

Anything that occupies space and has mass

Movement

Packed closely in fixed positions

Definite shape and volume

Close but not in fixed positions

No fixed shape, definite volume

Far apart, move at high speed randomly

No definite shape or volume

Gain kinetic energy, move faster

Solid to liquid when particles gain energy to break free

Liquid to gas when particles overcome intermolecular forces

Evaporation occurs at surface below boiling point

Solid to gas directly without becoming liquid

Particles colliding with container walls

Solids: very strong; Liquids: weaker; Gases: very weak