Water Heats Up When it Freezes. . . But Why?

What if I told you that water heats up as it freezes. This may sound counterintuitive, but it’s the truth.

When water undergoes the phase change between liquid and solid, the fluid momentarily warms in temperature. This happens to an even bigger extreme in metals like gold when they cool from a liquid to a solid. But why?

This principle sounds like it shouldn’t be possible. Here to explain it and demonstrate it, is Cody’s Lab in the short video below.

Trevor is a civil engineer by trade and an accomplished internet blogger with a passion for inspiring everyone with new and exciting technologies. He is also a published children’s book author whose most recent book, ZOOM Go the Vehicles, is aimed at inspiring young kids to have an interest in engineering.

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