What happens to air when it heats up?
| January 3, 2021 | education
When heated, air expands, and when cooled, it contracts. This is clearly seen in experiments. For example, experience: take a plastic bottle, fill it with liquid nitrogen, and pull a ball over the open end of the bottle.
When heated, the molecules of a substance begin to move faster and move more apart from each other, thereby increasing the volume of the substance. The increase in the volume of solids is not always visible to the human eye.
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