CH-1189
Metals and alloys
Chemistry · Secondary 4 · Medium · Metals and alloys
Brass is an alloy of copper and zinc.
Why is brass harder than pure copper?
Why is brass harder than pure copper?
- Zinc atoms form strong covalent bonds with copper atoms.
- Zinc atoms distort the layers of copper atoms, preventing them from sliding easily.
- Zinc atoms remove the delocalised electrons from the metal lattice.
- Zinc atoms increase the number of electron shells in each copper atom.
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