Key term for OCR GCSE Chemistry B, used in Development of scientific theory.
The sum of the relative atomic masses of the atoms in the numbers shown in a chemical formula.
Relative formula mass (Mᵣ) appears in OCR GCSE Chemistry B revision content for Ideas about Science, especially Development of scientific theory and Use of models.
Ideas about Science
Development of scientific theory • Use of models
Making useful chemicals
Industrial chemical synthesis • Calculating atom economy
Making useful chemicals
Industrial chemical synthesis • Atom economy definition
Chemical analysis
Solution measurements • Molar concentration
Chemical analysis
Stoichiometry calculations • Arithmetic computation
Chemical analysis
Stoichiometry calculations • Calculations from equations
Chemical analysis
Stoichiometry calculations • Mass to moles relationship
Chemical analysis
Stoichiometry calculations • Relative formula masses
Chemicals of the natural environment
Metal extraction and reactivity • Equations for reactions
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