What is shared when a covalent bond forms?
Hydrogen, chlorine, oxygen and nitrogen exist as diatomic molecules.
A shared pair of electrons joins the atoms.
Sharing gives hydrogen two outer-shell electrons; carbon, nitrogen, oxygen and chlorine can gain eight.
Flashcards for AQA GCSE Chemistry 2.1.4 Covalent bonding, covering the key terms, definitions and equations you need to recall for Paper 1 and Paper 2. 20 cards, matched to the AQA GCSE Chemistry (8462) specification. Recall questions account for roughly 40% of marks at GCSE Chemistry, so these target the marks you can secure before the paper starts.
