Radioactivity (Paper 1)

Question 1

What is an alpha particle?

Answer 1

An alpha particle is two neutrons and two protons.

Question 2

What is a beta particle?

Answer 2

An electron emitted from the nucleus when a neutron turns into a proton.

Question 3

What is an isotope of an element?

Answer 3

An isotope of an element is an atom with the same number of protons but different numbers of neutrons.

Question 4

What is the relative mass of a proton?

Answer 4

1

Question 5

What is relative mass of a neutron?

Answer 5

1

Question 6

What is the relative mass of an electron?

Answer 6

Around 1/2000

Question 7

What is the relative charge of a proton?

Answer 7

+1

Question 8

What is the relative charge of an electron?

Answer 8

-1

Question 9

What is the relative charge of an neutron?

Answer 9

0

Question 10

What is gamma radiation?

Answer 10

Gamma radiation is electromagnetic radiation from the nucleus of an atom.

Question 11

What is neutron emission?

Answer 11

Neutron emission is when alpha particles collide with unstable nuclei in the substance. This causes the unstable nuclei to become even more unstable and emit a neutron.