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The video tutorial explains the concept of freezing, where a liquid turns into a solid due to cold temperatures. It discusses the freezing points of water and mercury, and how freezing affects various materials like rain and food. The video also contrasts freezing with melting, explaining how higher temperatures cause substances to melt. It concludes with a thought-provoking question about the different freezing points of salt water and fresh water.

What is the freezing point of water in Fahrenheit?

How does freezing affect the state of liquids?

What happens to rain when it freezes?

What is the opposite of freezing and how does it occur?

Why do salt water and fresh water have different freezing points?