Class practical: This is a classic experiment that gives strong circumstantial evidence for the particulate nature of air.

Practical Activity 14-16

Demonstration

Practical Activity 14-16

Robert Brown is correctly referred to as having observed the jittering motion of small particles. But he did not observe the...

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...

DOMAINS CPD 11-14 14-16 16-19