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

Imagine molecules in a gas; dots spaced far apart. Add arrows to show the random motion, not all speeds (arrows) the same but...

Teaching Guidance 14-16

Students will probably have met the simple molecular picture of solids, liquids and gases. Matter is, in every case, made up...

Teaching Guidance 14-16

When teaching this topic, it is important to avoid your students conflating the energy analysis with an explanation of what’s...

CPD 11-14 14-16 16-19