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10 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Atoms
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Smallest particles of an element that retain the chemical identity of the element
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smallest
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proton
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positive (1+)
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+
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neutron
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none (neutral)
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neutral
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electron
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negative(1-)
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-
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atomic number
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atom has no net electrical charge, the number of electrons it contains must equal the number of protons
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electrons = protons
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mass number
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total number of protons plus neutrons in the atom
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protons + neutrons
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isotopes
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same number of protons but different numbers of neutrons
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atomic weight
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average atomic mass of each element
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group 1A
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alkali metals
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Li, Na, K, Rb, Cs, Fr
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group 2A
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alkaline earth metal
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Be, Mg, Ca, Sr, Ba, Ra
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