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प्रश्न
Fill in the blank:
The change of water vapour into water is called ......................
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उत्तर
The change of water vapour into water is called condensation.
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संबंधित प्रश्न
Fill in the blank:
The change of a solid into a liquid is called melting or................
What do you observe when a gas jar which appears empty is inverted over a gas jar containing Bromine vapours? Name the phenomenon.
Define interconversion of states of matter.
Give reason for the following.
Pure substances have fixed melting or boiling points.
A substance which can change its state
- wood
- oxygen
- paper
- cloth
How will you prove by an experiment that solids occupy space ?
Give reason of Why do liquids and gases flow but solids do not ?
Fill in the blank
Matter is anything that has ______ and occupies ______
Which one of the following statements is not true?
- the molecules in a solid vibrate about a fixed position
- the molecules in a liquid are arranged in a regular pattern
- the molecules in a gas exert negligibly small forces on each other, except during collisions
- the molecules of a gas occupy all the space available
Fill in the blank:
The intermolecular force of attraction is ___________ in solids.
