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How much? 3
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How much? 3
The Mass of Atoms 3.1
- protons and neutrons have the same mass
- mass = 1
- total number of these is called the mass number
- mass of electron is very small
- mass of atom is mostly protons and neutrons
- there can be different numbers of neutrons in atoms of the same element
- these are called isotopes
- mass number - atomic number = number of neutrons
- protons and neutrons have the same mass
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- GCSE Chemistry Mind Map on How much? 3, created by vicky.pratt on 20/04/2014.
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- vicky.pratt
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