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Freezing and Melting

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Questions and Answers

Which of the following best describes freezing?

The change of state from a liquid to a gas

The change of state from a gas to a liquid

The change of state from a liquid to a solid (correct)

The change of state from a solid to a liquid

At what temperature does water freeze?

63 C

100 C

The temperature varies depending on the amount of water

0 C (correct)

Which of the following substances does not have to be cold to the touch in order to freeze?

Water

Metal

Wax (correct)

Air

What happens to the thermal energy of a substance during freezing?

<p>It decreases</p> Signup and view all the answers

What is a substance's freezing point?

<p>The temperature at which it changes from a liquid to a solid</p> Signup and view all the answers

Study Notes

Freezing

Freezing is the process of a substance changing from a liquid to a solid state.
Water freezes at 0°C (32°F) at standard atmospheric pressure.
Supercooled liquids, like supercooled water, can freeze without being cold to the touch.
During freezing, the thermal energy of a substance decreases, and the molecules slow down, coming together to form a crystal lattice structure.
A substance's freezing point is the temperature at which it changes state from a liquid to a solid, and it is a specific temperature that is unique to each substance.

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Description

Test your knowledge on freezing and melting with this quiz! Learn about the process of changing states from a liquid to a solid and vice versa. Find out how temperature affects the movement of molecules and discover the science behind freezing.