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Chemistry OCR F321 > Atoms > Flashcards

Flashcards in Atoms Deck (5)
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1

Isotopes

Atoms of the same element with different numbers of neutrons and masses.

2

Relative isotopic mass

The mass of an atom of an isotope compared with 1/12th of the mass of an atom of carbon-12.

3

Relative atomic mass

The weighted mean mass of an atom of an element compared with 1/12th of the mass of an atom of carbon-12.

4

Relative formula mass

The weighted mean mass of an atom of a formula unit compared with 1/12th of the mass of an atom of carbon-12.

5

Relative molecular mass

The weighted mean mass of a molecule compared with 1/12th of an atom of carbon-12.