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Topic 1a - Atoms (Atoms (Radius (0.1 nanometer, 1x10-10 metres), Overall…
Topic 1a - Atoms
Atoms
Radius
0.1 nanometer
1x10-10 metres
Overall charge is 0
Nuclear model
Small nucleus
In the middle of atom
Contains
Protons
Neutrons
Overall positive charge
About 1x10-14 metres - 1/10000 size of atom
Surrounded by electrons
Occupy shells around the nucleus
Protons
Relative charge - +1
Relative mass - 1
Neutrons
Relative charge - 0
Relative mass - 1
Electrons
Relative charge - -1
Relative mass - 0