At what temperature does water reach its maximum density?

Question

Quizplus · Accepted Answer

Water reaches its maximum density at 4°C. This means that water is heaviest at this temperature and will sink to the bottom of a container. As water cools below 4°C, it becomes less dense and will actually float on top of the slightly warmer water below it. This is why ice floats in water instead of sinking to the bottom, which has important implications for aquatic life and the environment.

At What Temperature Does Water Reach Its Maximum Density