1. Properties of water notes

2. Water molecule

3. Polarity
Water molecules are POLAR because they have positive and negative regions.
This makes water the UNIVERSAL SOLVENT!

4. Universal solvent
Water can dissolve many substances including carbohydrates and some proteins
Water cannot dissolve lipids-they are HYDROPHOBIC
This provides a watery (aqueous) environment for cells and their chemical reactions (metabolism)

5. Cohesion Water molecules are attracted to each other
Water molecules form hydrogen bonds

6. Adhesion
Water molecules are attracted to other molecules

7. Capillary action Results from adhesion and cohesion
Allows water to defy gravity and move upward through veins called xylem in plants.

8. Less dense as a solid
Water expands when it freezes because it forms crystal-like bonds
Allows ice to float on ponds, lakes, and rivers!

9. High specific heat Large amount of energy is needed to heat water
Water resists temperature change, helping to maintain homeostasis

10. High heat of vaporization
Large amount of heat is needed to change boiling water to steam
Produces evaporative cooling. This is why sweat cools you off!