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Metals and Non-metals
Question
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What are non-metals?

 

Answer

Non- metal are poor conductors of heat, electricity, do not reflect light and have no lustre. Hydrogen, carbon, silicon etc. are some of the non-metallic elements.

Non-metals are the elements which form negative ions by gaining electrons, e.g., oxygen is a non-metal which forms oxide ions, O–2, by gaining electrons.

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Some More Questions From Metals and Non-metals Chapter

Give important physical characteristics of metals.

What do you understand by malleability and ductility of a metal? Give examples of two metals which are both ductile and malleable.

Define the terms:  (i) Thermal conductivity     (ii) Electrical conductivity.

Explain the term sonority.

What is meant by tensile strength?

Why are metals good conductors of heat and electricity?

Why do metals possess lustre?

Why are metals generally ductile and malleable?

What is meant by hardness of a substance? Name some metals which are hard.