Relative Formula Mass (Mᵣ)

Key term for OCR GCSE Biology B, used in Interdependence in Ecosystems.

Definition

The sum of the relative atomic masses of all the atoms shown in a chemical formula.

Exam Context

Relative Formula Mass (Mᵣ) appears in OCR GCSE Biology B revision content for Ecosystems and Photosynthesis, especially Interdependence in Ecosystems and Percentage Mass Calculations.

Ecosystems and Photosynthesis Interdependence in Ecosystems Percentage Mass Calculations

Found in Revision Notes

Ecosystems and Photosynthesis

Percentage Mass Calculations

Interdependence in Ecosystems • Percentage Mass Calculations

Revise note

Related Key Terms

Atmosphere Biomass Conservation of mass Decomposition

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Dry Biomass

Oceans

Percentage Mass of an Element

Photosynthesis