radioactivity
- Created by: Ellen Saunders
- Created on: 04-04-17 11:41
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- radioactivity
- alpha radiation
- 2 neutrons 2 protons
- same as a helium nucleus
- changes the element
- 2 neutrons 2 protons
- charge of +2
- not very penetrating
- relatively big heavy and slow moving
- can't travel though skin, a piece of paper as it's so big
- the most ionising
- its size makes it the strongest
- alpha can do the most damage to cells and other atoms
- they bash into alot of atoms and knock electrons off creating ions
- 2 neutrons 2 protons
- beta radiation
- 1 electron
- charge of -1
- a neutron in the nucleus turns into proton to release the electron
- changes element
- moderately penertrating
- virtually no mass
- moves fast
- can't travel through a thin sheet of aluminium
- can travel through skin but is absorbed by a few cm of body tissue
- 1 electron
- gamma radiation
- an electro-magnetic wave
- very short wave length
- has no charge
- element stays the same
- an electro-magnetic wave
- alpha radiation
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