P7.1 Atoms And Radiation Flashcards
1
Q
Radioactive substance
A
Releases nuclear radiation
2
Q
Nuclear radiation
A
A type of ionising radiation emitted from an unstable nucleus
3
Q
Ionising
A
To remove electrons from an atom, forming an ion
4
Q
The 3 types of Nuclear Radiation
A
Gamma (y)
Beta (b)
Alpha (a)
5
Q
Geiger
A
Detects Radioactivity
6
Q
What is strength of radioactivity measured in
A
Becquerels (Bq)
7
Q
Alpha decay
A
Nucleus loses 2 protons and neutrons
8
Q
Beta particle
A
An electron created by a nucleus which has too many neutrons compared to protons
9
Q
Gamma particle
A
Emitted by some unstable nuclei after an alpha or beta particle has been emitted
