Nuclear Chemistry

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6 Terms

1
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define isotopes

atoms of the same element with varying numbers of neutrons

2
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alpha particles

heaviest non-isotope particle, penetrate tissue the least (piece of paper can block) 4/2He²+

3
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beta particles

essentially electrons, much smaller than alpha particles, penetrate tissue medium (thick clothing will stop) 0/-1B

4
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positrons

anti-matter, positively charged electrons, penatrate tissue the same as B particles 0/+1B

5
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Gamma rays

high energy, most tissue penetration (concrete walls needed to stop) 0/0Y

6
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Define half-life

the amount of time for half of a radioisotope to decay