Atoms and Isotopes

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Physics

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6 Terms

1
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The atomic number is

the number of protons in an atom

2
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The mass number is

the number of protons and neutrons in an atom

3
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Which is bigger, the mass number or the atomic number?

The mass number

4
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What are the particles in the nucleus called?

nucleons

5
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What are isotopes?

Nuclei with the same number of protons but different number of neutrons

6
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What is the strong nuclear force?

the force responsible for holding the nucleus together