8.6 A Phase Change Requires the Input or Output of Energy

Energy and Phase Transformations

It takes energy to go from a solid to a liquid or a liquid to a gas. Conversely, energy is released when a material goes from a gas to a liquid or from a liquid to a solid. Duration: 5:21.

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Going Between Liquid and Gas

It takes a lot of energy to change 100 degree liquid water to 100 degree gaseous water. This amount of energy is given by the heat of vaporization. Duration: 6:28.

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KM: Maile Walks Across Hot Coals

Maile braves the elements and walks across hot coals to demonstrate the wonder of water's high heat of vaporization. But where is Kai? Duration: 1:18.

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KM: Kai's Stiff Neck

The high heat capacity of water has many practical applications. One example is making a heating pad for Kai's sore neck. Duration: 5:02.

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