P7- Radioactivity Flashcards
1
Q
Ion
A
The charged particle produced when an atom gains or loses electrons
2
Q
Ionising power
A
The ability of a radiation to create ions
3
Q
Ionised
A
When atoms in a substance is exposed to radiation
4
Q
Penetrating power
A
The ability of radiation to pass through substances
5
Q
Irradiated
A
A substance which has seven exposed to radiation but is not radioactive
6
Q
Radioactive contamination
A
When radioisotopes are transferred to an object marking it radioactive
7
Q
Half-life
A
The time it takes for either of the radioactiveness to halve
8
Q
Count rate
A
Number of counts per second
9
Q
Activity
A
The number of radioisotopes to decay per second
