PPE Revision Quiz part two

An atom is composed of a positive ( ) and negative ( )

The nucleus is composed of ( ) and neutral neutrons.

• positive protons

• negative electrons

• negative protons

• positive electrons

Which one represents the proton number?

• 23

• 11

• 23-11

• 23+11

which one represents the nucleon number?

• 23

• 11

• 23-11

• 23+11

The number of protons = The number of ( )

Carbon-12 and carbon-13 are isotopes. They have the same number of protons but different number of ( )

There are 3 forms of radiations, alpha, beta and gamma radiation. Can you compare the ionising power between alpha, beta and gamma particles?

• gamma > beta > alpha

• beta > gamma > alpha

• alpha > beta > gamma

here are 3 forms of radiations, alpha, beta and gamma radiation. Can you compare the penetrating power between alpha, beta and gamma particles?

• gamma > beta > alpha

• beta > gamma > alpha

• alpha > beta >gamma

• beta > alpha > gamma