Chemistry (Combined Science) · GCSE · Edexcel · Edexcel GCSE Combined Science (1SC0) — Chemistry — Higher · Specification point · 1.9 · Key concepts in chemistry · Atomic structure
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| Students should: | Maths skills |
|---|---|
1.9 Describe isotopes as different atoms of the same element containing the same number of protons but different numbers of neutrons in their nuclei |