Demonstration: This is a classic demonstration that gives strong circumstantial evidence for the particulate nature of vapours...

Practical Activity 14-16

Demonstration: A classic demonstration that is explained satisfactorily by a particulate model of gases. The students first...

Practical Activity 14-16

Demonstration

Practical Activity 14-16

Demonstration

Practical Activity 14-16

Class practical: Here phosphor bronze balls model a small volume of a gas.

Practical Activity 14-16

Class practical: Students use marbles in a tray to explore models.

Practical Activity 14-16

Class practical: Students use marbles in a tray to model the expansion of liquids and gases.

Practical Activity 14-16

Demonstration

Practical Activity 14-16