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SOLVENT PROPERTY OF WATER
Ionic compounds dissolve in water:
- Charged regions of polar water molecules have an electrical attraction to charged ions.
- Water surrounds individual ions, separating and shielding them from one another.
Polar compounds in general, are water-soluble:
- Charged regions of polar water molecules have an affinity for oppositely charged regions of other polar molecules.
Hydrophobic { Nonpolar compounds (which have symmetric distribution in charge) are NOT water-soluble.
CAPILLARY ACTION OF WATER
Cohesion. Water molecules "stick together" due to their hydrogen bonds, so water has high cohesion. This explains why long columns of water can be sucked up tall trees by transpiration without breaking (capillarity). It also explains surface tension, which allows small animals to walk on water.
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