Biology - Atoms & Ions
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Last updated 12:49 PM on 4/1/26
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5 Terms
1
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What is the relative mass of Protons, Neutrons, Electrons?
Protons - 1
Neutrons - 1
Electrons - Very Small
2
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What is the charge of an atom if the number of Protons and Electrons are equal?
The charge of the atom is neutral, as the positive charge of the protons balances the negative charge of the electrons.
3
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What is an ion?
An atom or molecule that has gained or lost one or more electrons.
4
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What is the atomic number and which one is it?
The atomic number is the number of protons and electrons in an atom. (Bottom number).
5
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What is the top number in an element?
Mass number - Number of protons and neutrons.
