Physical Science- unit 6

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15 Terms

1
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what is emitted through radioactivity

energy and particles

2
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when does radioactivity occur

when an element is unstable

3
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alpha particle

2 protons and 2 neutrons

4
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what occurs in an alpha problem

-4 to mass -2 to atomic number

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what occurs during beta

+1 to atomic number

6
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what is the highest energy wave

gamma rays

7
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what has no mass and no charge

gamma rays

8
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radioactive dating

amount of atoms in daughter and parent

9
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what is a nebula

a cloud of gas and dust

10
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what determines how long a star will live and how it will die

the size

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15
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