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Unit 2 Biology
Properties Of Water
| Term | Definition |
|---|---|
| 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 |
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SLYHS2018