Question

with the help of an activity show that gases exert pressure on the wall of the container​

Answer 1

Answer:

Activity 1:-

Materials Required: tumbler, water, square cardboard piece

Method: Fill up the tumbler with water up to the brim. Cover it with cardboard piece and turn the glass upside down. Slowly remove your hand.

Observation: Cardboard does not fall and water stays in the glass.

Inference: air pushes the cardboard up and prevents it from falling.

Activity 2:-

Materials Required: plastic bottle with cap, hot water, cold water

Method: Pour hot water into the plastic bottle. Empty the bottle and put the cap tightly. Pour some ice-cold water on it.

Observation: The bottle will get de-shaped.

Inference: The air from the bottle expands as it becomes hot. When it is cooled, air contracts. The outside air has more pressure and it crushes the bottle.

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Answer 2

Answer:

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