Key term for OCR GCSE Chemistry B, used in Development of scientific theory.
The average mass of an atom of an element compared to 1/12th the mass of an atom of carbon-12.
Relative atomic mass (Aᵣ) appears in OCR GCSE Chemistry B revision content for Ideas about Science, especially Development of scientific theory and Use of models.
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Chemical analysis
Stoichiometry calculations • Arithmetic computation
