Relative atomic mass
What Relative atomic mass means in Chemistry A-Level, as defined for AQA, OCR.
Definitions of Relative atomic mass
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Reference: AQA
The weighted mean mass of an atom of the element divided by one-twelfth the mass of an atom of carbon-12.
The weighted mean mass of the atoms of an element compared with 1/12 of the mass of an atom of carbon-12.
The weighted mean mass of an element's atoms compared with one-twelfth of the mass of a ¹²C atom.
Topics that use Relative atomic mass
- Relative atomic mass and relative molecular mass (AQA A-Level)
- Atomic structure and isotopes (OCR A-Level)
Related terms
- relative formula mass
- relative molecular mass
- atomic number
- Calculation accuracy
- ionic lattices
- isotopes
- Isotopic abundance
- Isotopic abundance and its effect on the mean
Using Relative atomic mass in the exam
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