Ions, atoms and isotopes

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Chemistry

7th

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9 Terms

1
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What is an ion?
A charged atom or group of atoms
2
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What are isotopes?
Atoms of the same element with different numbers of neutrons
3
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What is the symbol for relative atomic mass?
RAM is written as A2.
4
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What is the formula for relative atomic mass?
RAM \= total mass of all atoms/total number of atoms
5
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Do isotopes’ physical properties differ?
Yes, but their chemical ones don’t
6
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What does Na+ mean?
A sodium atom with one less electron
7
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What does Na- mean?
A sodium atom with one more electron
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What does Na2+ mean?
A sodium atom with two less electrons
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What does Na2- mean?
A sodium atom with two more electrons