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.

Loading…

Isotopes and mass — OCR GCSE Physics A J249

Home
Physics
OCR GCSE Physics A
Radioactivity
Radioactive emissions
Isotopes and mass

OCR GCSE Physics A · J249

Isotopes and mass

What you need to know

Recall that atoms of the same elements can differ in nuclear mass by having different numbers of neutrons.

Revision notes

1
Isotopes and mass
4 key terms

Practise with past papers Key terms & definitions

Previous subtopicNucleus composition Next subtopicNuclear representation