GCSEPhysRadioactiveDecay13 Flashcards
1
Q
Alpha Decay Equation for Uranium-238
A
²³⁸U₉₂ → ²³⁴Th₉₀ + ⁴He₂
2
Q
What happens to A in any Alpha Decay?
A
A decreases by 4
3
Q
Alpha Particle Atomic Mass Number
A
4
4
Q
Beta particle range in air
A
several metres.
5
Q
Beta particle ionising power
A
moderate
6
Q
Beta particles can be stopped by
A
5mm of Aluminium
7
Q
The half-life of a radioactive isotope is the time taken for its activity to …???
A
fall by half
8
Q
Gamma ray charge
A
Zero
9
Q
Beta Decay equation for carbon 14
A
¹⁴C₆ —> ¹⁴N₇ + ⁰e₋₁
10
Q
Gamma Ray Ionising Power
A
Very weak
11
Q
How A changes in Gamma Decay
A
no change
12
Q
How A changes in beta decay
A
no change
13
Q
A beta particle is a fast-moving …?
A
electron
14
Q
Alpha Particles can be stopped by as little as a sheet of…?
A
paper
15
Q
Alpha Particle Ionising Power
A
Very strong
