AP BIOLOGY

Detailed explanation-1: -The freezing point is the temperature at which a liquid turns to a solid. The freezing point at which water-a liquid-turns to ice-a solid-is 32°F (0°C).

Detailed explanation-2: -Fresh water freezes at 32 degrees Fahrenheit but seawater freezes at about 28.4 degrees Fahrenheit, because of the salt in it.

Detailed explanation-3: -When a solid reaches the temperature of its melting point, it can become a liquid. For water, the temperature needs to be a little over zero degrees Celsius (0oC) for you to melt.

Detailed explanation-4: -We’ve all been taught that water freezes at 32 degrees Fahrenheit, 0 degrees Celsius, 273.15 Kelvin. That’s not always the case, though. Scientists have found liquid water as cold as-40 degrees F in clouds and even cooled water down to-42 degrees F in the lab.

Detailed explanation-5: -Freezing happens when the molecules of a liquid get so cold that they slow down enough to hook onto each other, forming a solid crystal. For pure water, this happens at 32 degrees Fahrenheit, and unlike most other solids, ice expands and is actually less dense than water. That is why ice cubes float!