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Chemistry CBSE Live product
Class 7
The World of Metals and Non-metals
Properties of materials
10.
Properties of non-metals
Question:
3
m.
Answer the following questions:
1.
What are the different physical properties of non-metals?
i.
Why non-metals cannot be drawn into thin wires?
Non-metals break easily when stretched, and they are non-ductile
Non-metals do not break easily when stretched, and they are non-ductile
Non-metals are very hard to stretch, and they are non-ductile
Non-metals break easily when stretched, and they are ductile
Example:
Iron
Magnesium
Zinc
Sulphur
ii.
When hammered non-metals break easily. Give reason.
They are soft and brittle, on hammering breaks into a powdery mass
They are soft and brittle, on hammering flattens into thin sheet
They are hard, on hammering flattens into thin sheet
They are very hard, on hammering remains the same
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