Types of radiation

Question 1

Define ion

Answer 1

An atom which has lost or gained electrons, so the atom is positively or negatively charged

Question 2

Who created the nuclear model of the atom

Answer 2

Ernest Rutherford

Question 3

What happens to an atom if the number of protons are changed

Answer 3

It becomes a different element

Question 4

Define isotope

Answer 4

An atom with a different number of neutrons but same amount of protons

Question 5

Ionising power

Answer 5

The ability of a radiation to create ions

Question 6

Ionised

Answer 6

When atoms in a substance exposed to radiation lose electrons and become ions

Question 7

Penetrating power

Answer 7

The ability of radiation to pass through substances

Question 8

Irradiated

Answer 8

A substance that has been exposed to radiation but not made radioactive

Question 9

Radioactive contamination

Answer 9

When radioisotopes are transferred to an object making it radioactive

Question 10

Types of ionising radiation

Answer 10

Alpha-particles-made of 2 protons and 2 neutrons-the most ionising(dangerous)-5cm range in air-absorbed by paper
Beta-particles-A fast moving electron-second most ionising-1m range in air-absorbed by 5mm aluminium
Gamma-high energy electromagnetic wave-least ionising-infinite range in air-absorbed by thick lead or 1m concrete