Here, students can learn more about how the microscopic behaviour of particles gives rise to macroscopic behaviour; they can...

Teaching Guidance 16-19

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