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Unit 2 Biology

Properties Of Water

TermDefinition
Polarity The unequal sharing of electrons
Hydrogen Bonds The weak attraction between the slightly positive and slightly negative ends of the molecules, which makes water "sticky".
Cohesion Water sticking to water. (Water is move cohesive than other liquids) The prefix CO- means with or together.
Adhesion Attraction between different types of molecules (Adhesives stick things together)
Capillary Action Water's ability to climb up a tree (due to cohesive and adhesive forces)
Surface Tension Surface tension is the elastic tendency of a fluid surface. This is why insects can walk on water. (Water has a high surface tension. All substances have some surface tension.)
Specific Heat (or Heat Capacity) A lot of heat is needed to raise temperature of water. Helps to keep your body temperature and bodies of water stable. (Water has a very high specific heat)
Heat of Vaporization Takes away heat when it vaporizes. EX. Sweat cools you down to maintain homeostasis. (Water has a high heat of vaporization)
Universal Solvent Water can dissolve other polar molecules and other charged particles (aka ions). It helps out bodies transport nutrients.
Density of Water Ice floats of top of liquid water. Allows to aquatic animals to live through the winter.
Why does soap break Hydrogen bonds? Because it has a polar head an non-polar tail
Created by: SLYHS2018
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