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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
Describe an experiment to showthat air expands on heating.
Describe an experiment to show that same volume of different liquids heated to same rise in temperature expand by different amounts.
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Telephone wires sag in summer.
The diagram shows a sketch graph showing a change in volume of a given mass of ice at -5°C to water at 15°C.
(i) Why does the temperature along BC remain constant?
(ii) When is the volume of water minimum?
(iii) At what temperature does water have maximum density? Explain.
Complete the following sentence:
When ice melts its volume ______ and density _______.
Give reason for the following
An ordinary glass bottle cracks when boiling water is poured into it, but a borosilicate glass bottle does not.
When we cool the liquid it will become ______.
When the vibrations move from one molecule to another molecule heat will flow.
