Question

Explain how a metal rim is fixed around the wooden wheel of a cart.Explain how heating or cooling of water brings changes in the state of matter.

Answer 1

Answer:

The metal rim is made slightly smaller than the wooden wheel. On heating, the rim expands and fits onto the wheel. Cold water is then poured over the rim, which contracts and fits tightly onto the wheel.

If water is cooled enough, it can change to ice. If ice is warmed enough, it can change to liquid water. Heating a substance makes the molecules move faster. Cooling a substance makes the molecules move slower.

Explanation:

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