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p4 purple pen revision
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p4 purple pen revision
The difference between the helium atom and the an alpha particle is that the helium atom has 2 electrons.
protons have positive charge and electrons have negative charge.
number of electrons=number of protons.
alpha-has the shortest range in air.
beta-will pass through paper but is stopped by thin metal
gamma-is very weakly ionising
gamma radiation will pass through the body.
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- Mind Map on p4 purple pen revision, created by Freya Sage on 18/01/2019.
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- Freya Sage
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