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9 Cards in this Set
- Front
- Back
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Dalton's Model |
Atoms are solid spheres & unique to specific elements |
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Thomson's model |
Plum Pudding |
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Rutherford's model |
Tiny positive nucleus, cloud of negative electrons. Mostly empty space. Gold foil experiment. |
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Bohr's Model |
Electrons orbit in fixed orbitals / shells (so they don't collapse) & emit/absorb radiation if they move between shells |
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Define: Relative Atomic Mass (Are) |
Average mass of an atom of an element on a scale where an atom of 12C is exactly 12 |
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Relative Isotopic Mass |
The mass of an atom of an isotope of an element on a scale where an atom of 12C is exactly 12 |
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Relative Molecular Mass (Mr) |
Average mass of a molecule on a scale where an atom of carbon 12 is exactly 12 |
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Relative formula mass |
Average mass of a formula unit on a scale where an atom of 12C is exactly 12. Used for ionic or giant covalent. |
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List Stages: Mass Spectrometry |
Ionisation Acceleration Ion Drift Detection |
