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8 Cards in this Set
- Front
- Back
Charge of an atom |
No overall charge. |
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Mass of a proton, neutron and electron |
Proton: 1 Neutron: 1 Electron: very small |
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Size of an atom |
Radius: 0.1nm (1×10•-10) |
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Niels Bohr |
Adapted the atomic model suggesting a positively charged nucleus surrounded by orbiting electrons. |
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James Chadwick |
Evidence to show existence of neutrons in nucleus. |
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Nucleus development |
Experiments show nucleus is made of smaller charged particles. |
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Alpha particle scattering |
The mass of an atom concentrated in centre, charged too. |
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Relative atomic mass |
(mass × abundance) + (mass × abundance) ______________________________________ 100 |