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SingaporeCombined ScienceQuick questions
Chemistry: Atoms, Bonding and the Mole
Quick questions on Chemical bonding: N(A)-Level Combined Science Chemistry
2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is ionic bonding?Show answer
Ionic bonding happens between a metal and a non-metal. Electrons are transferred from the metal atom to the non-metal atom:
What is covalent bonding?Show answer
Covalent bonding happens between non-metal atoms. Instead of transferring electrons, the atoms share pairs of electrons so that each gets a full outer shell. Each shared pair is one covalent bond. Water (), oxygen () and methane () are all covalent.
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