Water Properties SC.912.L.18.12. Water has unique properties that make it an important substance for life. Cohesion and Adhesion. Hkhkhjhkjhkh Cohesion is an attraction between substances of the same kind.
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Water has unique properties that make it an important substance for life.
Hkhkhjhkjhkh Cohesion is an attraction
between substances of the
Example: Hydrogen bonds
between water molecules cause the cohesion
of liquid water. Because of cohesion, water and
other liquids form thin films and drops.
other substances do. Many organisms release
excess heat through water evaporation.
Example: Humans cool themselves by sweating.
The water vapor lost through the evaporation of
sweat carries heat away from the body.
to dissolve in water.
Example: Ionic compounds and polar molecules
dissolve best in water
fewer water molecules to cling since there is air
above (no water molecules). This results in a
stronger bond between those molecules that
actually do come in contact with one another and a
layer of strongly bonded water.
Example: Small insects such as the water strider can walk
on water because their weight is not enough to penetrate
Why is water a good solvent for many ionic compounds?
Water has the ability to store heat longer than other substances. What benefit does this property of water provide to organisms?