Physics Test 2 Atomic Structure and Matter

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10 Terms

1
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atom

basic building block of matter

2
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protons (+)

neutrons

electrons (-)

what are atoms composed of?

3
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atomic number

number of protons in nucleus

4
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atomic mass

sum of protons and neutrons in nucleus

5
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nucleus of an atom is held together by a very strong force creating a what?

6
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electron binding energy

The electrons are held in their orbits by?

7
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electron shell

defined energy levels, each at different distances from the nucleus

8
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k shell

what is the electron shell that is closest to the nucleus?

9
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8

a maximun of how many electrons can exist in the outermost shell of any atom?

10
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2n^2

what is the inner shell capacity equation?