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प्रश्न
What is matter? What is it composed of?
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उत्तर
MATTER: Anything around us is a matter.
“Anything that has mass, occupies volume and can be felt by our senses.”
It is composed of molecules.
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संबंधित प्रश्न
The increase in length of a metal rod depends on
Two iron rods – one 10 m long and the other 5 m long, are heated to the same rise in temperature. Which will expand more?
One rod of copper and another identical rod of iron are heated to the same rise in temperature. Which rod will expand more? Give reason.
In the ball and ring experiment, if the ball after heating is left to cool on the ring for sometime, the ball again passes through the ring. Explain the reason.
Describe an experiment to show that same volume of different liquids heated to same rise in temperature expand by different amounts.
An iron washer is heated State the effect on its density.
Give reasons for the following:
Telephone wires sag in summer.
- Assertion: Gas is highly compressible than solid and liquid
- Reason: Interatomic or intermolecular distance in the gas is comparably high.
The expansion in volume is called linear expansion.
