Metallurgy
Metals
- Physical properties
- Shining surface (in pure state) [called metallic lustre]
- Generally hard [varies from metal to metal]
- Malleable [i.e. can be made thin sheets by beating]
- Ductile [i.e. can be drawn into thin wires]
- [Gold → Highly ductile]
- Good conductors of heat
- High melting point
- Conduct electricity
- Produce sound [some metals; these are called sonorous]
Non-metals
- Non-metals are found in all the three states i.e. solid, liquid and gas, at room temperature.
- Iodine (non-metal) has lustre
- Carbon has allotropes (exists in different forms)
- Diamond is hard
- Graphite (Conducts electricity)
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Metals |
Non-metals |
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These are soft and have no lustre. |
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These are non-malleable and non-ductile. |
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These are not sonorous. |
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These are poor conductors of heat and electricity. |
- Reactivity Mg > Al > Zn > Fe > Cu
- Reaction with solutions of other metal salts…
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