BIOL 1201 Chapter : Ch 3 Notes
Document Summary
Wherever there is water, it"s never going to get too hot or too cold. Compared to other liquids water requires a lot more energy. Evaporative cooling: as water evaporates, the surface of the liquid that remains behind cools down, this is because the hottest molecules (those with highest kinetic energy) are the most likely to evaporate. So what is left is on average, cooler: evaporation of sweat dissipates your body heat, high humidity prevents this because of the high amount of water vapor in the air. Non-polar are hydrophobic: hydrophilic substances have an affinity for water while hydrophobic substances do not, liquid less space between the molecules. Why is this important: the ability of ice to float keeps certain bodies of water from freezing solid. If ice sank, it would absorb heat in the form of kinetic energy from the water below it.
