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प्रश्न
Give reason :
When an empty gas jar is inverted over a gas jar containing a coloured gas, the gas also spreads into the empty jar.
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उत्तर
This shows that gases can fill up all the space that they get, and they have neither a fixed shape nor a fixed volume. They have no free surfaces, either.
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संबंधित प्रश्न
Define: Solid
Define: Liquid.
Give reason Pure substances have fixed melting or boiling point .
For the following statements, say whether it describes a solid, a liquid or a gas.
Particles move about very quickly.
The molecules of each substance are identical.
What do you mean by inter-molecular forces?
What is mass?
Give reason :
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Multiple choice question.
A kind of matter which can sublime is
Identify the odd term out and explain.
