End of unit test
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- Created on: 18-12-19 11:27
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- Chemistry End of unit test revision
- Ionic compounds
- Gain or lose electrons
- Metals lose electrons to become positive
- Non-metals gain electrons to become negative
- Dot and cross diagrams
- Positive ions are cations
- Negative ions are Anions
- Are held in a lattice regular structure.
- Gain or lose electrons
- Covalent bonding
- When elements share pairs of electrons.
- occurs in most non metallic elements and in compounds of non metals.
- Ionic compounds
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