When water freezes, the molecules slow down and assume a fixed position, although not quite in the way that one might think. Water is made of molecules with two hydrogen atoms and an oxygen atom, but those molecules don'...
Fresh water freezes at 32 degrees Fahrenheit, which is 0 degrees Celsius and 273.15 degrees on the Kelvin scale. Seawater freezes at a slightly lower temperature than fresh water due to its high salt content.
Hot water sometimes freezes faster than cold water, but there is no definitive answer as to why this occurs. Scientists believe many factors may play a role, such as evaporation, supercooling and dissolved gases.
Water boils when the thermal energy in the water, which is a type of kinetic energy which causes the water molecules to move around, exceeds the strength of the hydrogen bonds between the molecules, causing them to separ...
Hot water freezes faster than cold water, a phenomenon known as the Mpemba effect. The effect is named after a Tanzanian high school student who provided an interesting parable about this phenomenon in 1969.
Pure water freezes at 0 degrees Celsius at 1 atmosphere of pressure. The freezing point of salt water is lower and depends on the concentration of salt.
When water vapor cools, it condenses. It is a phase change where water changes from a gas to a liquid. Condensation is the opposite of evaporation.