Question

Tell more and more about that air expand on heating​

Answer 1

Answer:

Air molecules expand on heating and contract on cooling.

Hot air molecules take more space than cold air molecules.

Warm or Hot air is lighter than cool air.

Warm air, like smoke, rises up and cool air settles down.

When warm air rises up, it creates low pressure in the area, so surrounding cooler air, from relatively higher pressure, then comes to take up its place.

Examples

When a test tube is immersed in hot water, the air inside it expands and tries to take more space. On the other hand, when immersed in cold water, the air inside the tube contracts a little and tries to take up lesser space than normal.

Answer 2

Answer:

AS,AIR IS A GAS SO IT EXPANDS ON HEATING.

AND THE EXTENT OF EXPANSION ON HEATING IN THE GASES IS FASTEST.

TO PROVE THIS

TAKE AN EMPTY BEAKER CONTAINER AIR AND CLOSE IT'S MOUTH WITH A BALLOON ,HEAT IT.

THE BALLOON WILL ENLARGE IN SIZE AS IT CONTAINS AIR (OF THE CONTAINER) INSIDE IT.

ADDITIONAL INFORMATION-

GIVING AN OBJECT HEAT CAN LEAD TO THREE THINGS

1.CHANGE IN STATE

2.CHANGE IN TEMPERATURE

3.CHANGE IN DIMENSIONS(THERMAL EXPANSION)

THE EXTENT TO WHICH THE TEMPERATURE INCREASES ON HEATING AN OBJECT DEPENDS ON THREE THINGS

1 .AMOUNT OF HEAT SUPPLIED

2.MASS

3.MATERIAL OF THE OBJECT.