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This lesson provides a comprehensive overview of all the bonding, structure, and properties content required for the AQA GCSE Chemistry specification (4.2.1-4.2.4). It brings together ionic, covalent, and metallic bonding, linking structure to properties in a way that prepares you for comparison questions and extended-response tasks in the exam.
There are three main types of chemical bonding. The type of bonding that occurs depends on which types of atoms are involved.
| Bonding Type | Occurs Between | What Happens | Particles Formed |
|---|---|---|---|
| Ionic | Metal + non-metal | Electrons are transferred from metal to non-metal | Positive and negative ions |
| Covalent | Non-metal + non-metal | Electrons are shared between atoms | Molecules (or giant covalent networks) |
| Metallic | Metal + metal | Outer electrons are delocalised | Metal ions + sea of electrons |
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