Chemistry Unit 1

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Last updated 2:06 AM on 9/13/26
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5 Terms

1
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Density

the ratio of the mass (m) of a substance or object to its volume (V) (m/v)

2
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Isotopes

atoms of an element containing the same numbers of protons but different numbers of neutrons.

3
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Aufbau’s Principle

Fill the lowest level first.

4
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Hund’s Rule

Each degenerate gets one e- before getting a second.

5
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Pauli’s exclusion Principle

Every e- in a degenerate has a unique spin.