Nuclear Chemistry

Question 1

Describe an Alpha particle:

Answer 1

1. Consist of two protons and two neutrons (helium).
2. Least penetrating out of the three
3. Stopped by a thin sheet of paper
4. Strongly ionising because they are large and carry two positive charges

Question 2

Describe an Beta particle:

Answer 2

1. Consist of streams of high-energy electrons that are ejected from the nucleus
2. Stopped by 5mm thick sheet of aluminium

Question 3

Describe a Gamma ray:

Answer 3

1. High energy electromagnetic waves
2. Most penetrating
3. Can pass through several centimetres of lead/concrete
4. Weakly ionising

Question 4

How does alpha, beta and gamma pass through an electric field?

Answer 4

Diagram