Question

3. What are metalloids. Give two examples.
4. Define element. How it is different from
compound.
5. Write any three characteristics of metal.​

Answer 1

• Metalloids have properties which intermediate between that of Metals and Non metals. They are neither a conductor nor a insulator. They are semi-conductors.

Eg- Boron, Silicon, Germanium

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• Element is the purest form of matter, i.e it consists of only a single type of atom. It is different from compounds as compounds are made up of 2 or more elements which are chemically bounded.

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• Metals are often used in our day-to-day life because of its characteristics. Some of them are:-

i) They are malleable (can be beaten into thin sheets.)

ii)They are ductile (can be bend into thin wires.)

iii)They are sonorous (produces ringing sounnd when beaten)

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Answer 2

Answer:

3. Metalloids are elements which have properties intermidate between those of metals and non metals.Examples are silicon and Germanium.

4. A element is a material that consists of a single type of atom and a compound consists of two or more type of elements.

5. 1. Metals are good conductors of heat and electricity.

2.Metals are malleable.

3.Metals are solid at room temperature.