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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
Give scientific reason.
An ordinary glass bottle cracks when boiling water is poured into it, but a borosil glass bottle does not.
Define the following term:
Coefficient of cubical expansion
Thermal expansion is always a nuisance.
Give reason for the following
An ordinary glass bottle cracks when boiling water is poured into it, but a borosilicate glass bottle does not.
If you heat a circular disk with a hole, what change do you expect in the diameter of the hole? Remember that the effect of heating increases the separation between any pair of particles.
How solids are expanded on heating?
What type of glassware is used in laboratories? Why?
When the vibrations move from one molecule to another molecule heat will flow.
