As the glass of water was placed in the freezer, the temperature of the water decreased, leading to a reduction in thermal energy. The kinetic energy of the water molecules decreased as they lost heat to the surrounding environment, causing the molecules to slow down and eventually arrange themselves into a solid structure, resulting in ice formation.
You fill a glass with room temperature water from the sink and then place it in the freezer. After a few hours, you take the glass out and the water is now a solid. In two to three sentences explain what happened to the water in the glass as the temperature decreased. Key words to include for full points: kinetic energy, thermal energy, temperature, and heat.
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