Key term for OCR GCSE Chemistry B, used in Chemical equations.
A small group of covalently bonded atoms that carries an overall electrical charge.
Polyatomic ions appears in OCR GCSE Chemistry B revision content for Chemical patterns, especially Chemical equations and Deducing formulae from ions.
Chemical patterns
Chemical equations • Deducing formulae from ions
Chemical patterns
Formation of compounds • Ionic bonding explanation
Air and water
Atmospheric changes over time • Writing balanced equations
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