1.2 Radioactivity

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What is half-life?
The time taken for a radioactive isotope to decay to half its initial value
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What is positron decay?
B+ decay, another sub-type of beta decay. A proton is converted into a neutron whilst releasing a positron and an electron neutrino
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What is electron capture?
One of the orbital electrons is captured by a proton in the nucleus, forming a neutron and emitting and electron neutrino
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What is gamma used for in medicine?
Technetium-99 is used as a tracer. Cobalt-60 is used to treat cancer.
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How can carbon-14 be used?
To calculate the age of a plant or animals remains
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What is potassium-40 used for?
Its used to estimate the geological age of rocks
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Card 2

Front

What is positron decay?

Back

B+ decay, another sub-type of beta decay. A proton is converted into a neutron whilst releasing a positron and an electron neutrino

Card 3

Front

What is electron capture?

Back

Preview of the front of card 3

Card 4

Front

What is gamma used for in medicine?

Back

Preview of the front of card 4

Card 5

Front

How can carbon-14 be used?

Back

Preview of the front of card 5
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