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15 cards from this deck
Tiny spheres which cannot be divided
Ball of positive charge with negative electrons embedded in it
1909
Alpha particles (positively charged)
Thin sheet of gold foil
Atom is mostly empty space
Centre has positive charge
Mass is concentrated in the centre
Electrons orbit nucleus at specific distances
Energy levels or shells
Protons and neutrons
Energy levels or shells around the nucleus
The neutron
1803
1897
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