Question

How can you distinguish between a gas and vapour? ​

Answer 1

Explanation:

GAS IS A STATE OF MATTER WHILE VAPOUR IS NOT.

VAPOUR CAN UNDERGOING A PHRASE CHANGE WHILE GAS CANNOT.

EXAMPLE OF GAS IS HELIUM AND EXAMPLE OF VAPOUR IS WATER VAPOR.

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Answer 2

$\huge\bold\red{</p><p>ANSWER-}$

A gas is a vapour above its critical temperature, While vapour is a gas below its critical temperature.

Further, a gas can not be liquefied by applying pressure alone; whereas a vapour can be liquefied by applying pressure only.

$\huge\mathbb{ANSWER}$