Skip to content

Log in Sign up free

Loading…

Home
Subjects
Past papers
Key terms
Pricing

My courses

Select your courses

Loading…

Subjects

Biology
Business
Chemistry
Citizenship Studies
Classics
Combined Science
Computer Science
Design and Technology
English Language
English Literature
Film Studies
Food Preparation and Nutrition
Geography
History
Mathematics
Media Studies
Physical Education
Physics
Psychology
Religious Studies
Sociology
Statistics

Resources

Browse courses
Past papers
Key terms & definitions
Pricing

About

Sign up
Log in
Privacy Policy
Terms of Service

© 2026 GradeGen

Not affiliated with any exam board.

Relative atomic mass, Aᵣ — OCR GCSE Combined Science B Definition

Home
Combined Science
Key terms
Relative atomic mass, Aᵣ

GCSE Combined Science · key term

Relative atomic mass, Aᵣ

Definition

The average mass of an atom of an element compared with one-twelfth of the mass of a carbon-12 atom. It has no units.

Used by OCR

How each exam board covers it

OCR GCSE Combined Science B · J260

Chemistry, Combined Science

Revise: Conservation of Mass, Relative Formula Mass and Moles

OCR Combined Science B past papers

Related key terms

Avogadro constant
Closed system
Conservation of mass
Molar mass
Mole

Get more free notes every week

Create a free account to keep every note you open and track your progress.

Create free account Log in

Non-enclosed system

Relative formula mass, Mᵣ