Question

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If liquid water is exposed to normal atmospheric pressure, what needs to change in order to change its state of matter?

A) mass of water
B) temperature of water
C) shape of container
D) energy of water

Answer 1

If liquid water is exposed to normal atmospheric pressure, then the only way to make it change its state of matter is to manipulate its temperature.

Cool it to 0°C (32°F) or lower and it becomes solid.

Heat it to 100°C (212°F) or higher and it becomes gas.