Interactive activity: Changes of state - AQA Learn about changes of state from melting, evaporating and boiling with this interactive activity designed for the GCSE ... AQA A covalent bond is ...
Covalent bonding occurs in most non-metallic elements ... SUNAYANA: As always there’s loads more guides to GCSE chemistry topics on the BBC Bitesize webpages. TULELA: And you can listen on ...
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