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Atoms
Term | Definition |
---|---|
What is an isotope? | Atoms of the same element with a different number of neutrons |
What is an ion | An atom that has lost/gained electrons to become +/-vely charged atom |
What is relative isotopic mass? | The mass of an atom of an isotope compared with 1/12th of the mass of a carbon-12 atom |
What is relative atomic mass? (Ar) | The weighted mean mass of an atom of an element compared with 1/12th of the mass of a carbon-12 atom |
What is relative molecular mass? (Mr) | The weighted mean mass of a molecule compared with 1/12th of the mass of a carbon-12 atom |
What is relative formula mass? | The weighted mean mass of a formula unit compared with 1/12th of the mass of a carbon-12 atom |