Ch-3 Metals and Non-metals (Questions) Page 40

Question 1:	Give an example of a metal which (i) is a liquid at room temperature. (ii) can be easily cut with a knife. (iii) is the best conductor of heat. (iv) is a poor conductor of heat.
Answer :	(i) Metal that exists in liquid state at room temperature → Mercury (ii) Metal that can be easily cut with a knife → Sodium (iii) Metal that is the best conductor of heat → Silver (iv) Metals that are poor conductors of heat → Mercury and lead
Question 2:	Explain the meanings of malleable and ductile.
Answer :	Malleable: Substances that can be beaten into thin sheets are called malleable. For example, most of the metals are malleable. Ductile: Substances that can be drawn into thin wires are called ductile. For example, most of the metals are ductile.