2. WATER Characteristics and Properties

3. WHAT IS WATER? Inorganic Compound – derived from nonliving things Most abundant compound on Earth Found in nearly every living thing

4. Water is a Polar Compound Electrical charge is unevenly distributed Chemical Formula = H 2 0

5. Electrical Charge of Water Hydrogen = positive charge Oxygen = negative charge

6. HYDROGEN BONDING Hydrogen of one water molecule is attracted to the oxygen of another water molecule. Partial charges cause water molecules to “stick” together. This bonding gives water some of it’s unique properties.

7. COHESION Ability of water molecules to bond to each other Surface Tension – cohesion of water molecules at the surface of a body of water.

9. ADHESION Ability of water molecules to bond to another surface Gives water the ability to “stick” to other surfaces.

10. CAPILLARY ACTION The ability of water to move through fine pores. This allows water and any substances dissolved in the water to move through the roots and shoots of plants and blood vessels in our bodies.

11. CAPILLARY ACTION (2) Capillary action occurs when adhesion and cohesion work together.

12. Capillary Action in Roots