Lakhmir Singh Class 9 Chemistry Solutions for Matter in Our Surroundings - Exercise in Chapter 1 - Matter in Our Surroundings

Question 72 Matter in Our Surroundings - Exercise

(b) Why does a gas fill a vessel completely?


(b) As we know, gases have large inter-molecular space and weak inter-molecular force of attraction. Due to these properties, gases do not have a fixed shape and volume and particles of gases move freely in the vessel. Therefore, the gas particles spread out and move away from each other filling the vessel completely.

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