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Home › Edexcel GCSE Combined Science (Double Award) › Chemistry: Atoms, Bonding and the Periodic Table

Edexcel · GCSE · Combined Science (Double Award) · Revision Notes

Chemistry: Atoms, Bonding and the Periodic Table

60 words · Last updated July 2026

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What you'll learn

Atoms, the periodic table and bonding.

Key ideas

Atomic structure, isotopes; ionic and covalent bonding.
Group 1, Group 7, Group 0 and reactivity trends.

Exam tips

Link group number to outer electrons.
Learn the reactivity trends.

Common mistakes

Confusing atomic and mass number.
Reversing the reactivity trends.

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