Demonstration: a match flame will ionise the air. Use this to show ionisation and how it can be detected by charging an...

Practical Activity 14-16

Demonstration: a radioactive source produces radiation that will ionise the air. The conducting air completes a circuit to...

Practical Activity 14-16

As students start experiments on ionisation, they will have a fairly basic model of atoms and molecules as portrayed by the...

Teaching Guidance 14-16

Both photons and particles can shift enough energy to to convert the absorber atoms to ions. Detect these ions and you'll have...

Physics Narrative 14-16

Fast-moving charged particles can rather easily shift energy to atoms and so strip electrons–that is, ionise the atoms. There...

Physics Narrative 14-16

An atom or molecule is ionised by having at least one electron stripped from it:

Physics Narrative 14-16

It is quite common to see statements along the lines of alpha particles are more ionising than beta , but this is not actually...

Teaching Guidance 14-16