Chemistry - atoms
- Created by: cassiarh01
- Created on: 17-01-18 12:33
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- Atoms
- Nuleus
- Contains protons and neutrons
- Has a positive charge
- Electrons
- Move around the nucleus in shells
- Negatively charged and tiny
- Have no mass
- Atoms have no charge - same number of protons as electrons
- Atomic number - how many protons there are
- Mass number - total number of protons and neutrons
- To get neutron number, subtract atomic number from mass number
- Nuleus
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