Give a reason for the following.
A gas fills up the entire space available to it.

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Solution

The intermolecular force of attraction is the weakest in gases.
So, the intermolecular space between molecules in gases is the largest in comparison to liquid and solids.
Hence, the molecules in gases are very far apart and completely free to move about in the whole space available to them.
Therefore, a gas fills up the entire space available to it.

Molecular arrangement in gases

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Similar questions

Give reasons for the following statements.

(i) It is necessary to specify its temperature and pressure while stating the volume of a gas.

(ii) Gas fills the vessel completely in which it is kept.

(iii) Inflating a balloon seems to violate Boyle's law.

(iv) Mountaineers carry oxygen cylinders with them.

4. (C) On the basis of molecular theory, explain why a gas fills entire space available to it?

When we fill a container with ___________, It spreads out and occupies the entire available space.

Why can the gases fill the entire space available to them?

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