Radioactivity Flashcards
1
Q
What is the Mass Number?
A
Number of protons and neutrons in the nucleus of an atom
2
Q
What are alpha particles?
A
Radioactive particles that have a positive charge
3
Q
What charge does an alpha particle have?
A
2+
4
Q
What charge does a beta particle have?
A
1-
5
Q
What charge does a gamma ray have?
A
0
6
Q
What can alpha particles be used for?
A
Smoke detectors
7
Q
What can beta particles be used for?
A
Tracers
8
Q
What can gamma rays be used for?
A
To kill bacteria in fruit (irradiating)
Chemotherapy
Radiotherapy
9
Q
What is an isotope?
A
Atoms with a different amount of neutrons
10
Q
What is a radioisotope?
A
An isotope that is radioactive
11
Q
What is the Atomic Number?
A
Number of protons inside the nucleus of an atom
