2.7 Flashcards
1
Q
What are atoms made of?
A
Atoms are made up of protons, neutrons and electrons
2
Q
What is an isotope?
A
Atoms of the same element with different numbers of neutrons are called isotopes
3
Q
Why are some atoms radioactive
A
The nuclei of some atoms are unstable
4
Q
What 3 ways that the nuclei of most radioactive atoms can lose some energy?
A
The can emit;
-Alpha (a) particles
-Beta (B) particles
-Gamma (Y) rays
5
Q
What can ionising radiation do to skin?
A
It will harm or kill the cells of that tissue. radiation ionise the cell (making it charged) killing it directly
6
Q
What does ionising radiation include?
A
-Alpha
-Beta
-Gamma
-X-rays
-Ultraviolet
7
Q
What does non- ionising radiation include?
A
-Visible light
-Infra red
-Microwave
-Radio waves
8
Q
What are the two types of decay?
A
Alpha and beta decay
