1. Properties of Water

2. 1. POLARITY Uneven distribution of charge
The oxygen end of the water molecule has a slightly negative charge while the hydrogen end has a slightly positive charge.

3. 2. SOLVENT From Latin solvere meaning “to loosen.”
Water dissolves other polar substances
(NaCl or sugar)
Water does not dissolve
nonpolar substances (oil)

4. 3. HYDROGEN BONDING
Hydrogen bonds are weak bonds that form between hydrogen atom and an oxygen atom.
Hydrogen bonds cause water to form a liquid at room temperature.

5. 4. COHESION Force that holds molecules of water together.
Creates surface tension where water “sticks” to water and forms a “skin.”
Ex.) Basilisk Lizard

6. 5. ADHESION
The attraction of water molecules to another material or surface.
Water “sticks” to other substances that also have a charge.

7. 6. CAPILLARITY or CAPILLARY ACTION
Water molecules are attracted to another surface (adhesion). Water “sticks” to water (cohesion) and moves up the straw.

8. 7. DENSITY Water has a density of 1.00g/mL
Any substance that has a density less than 1.00g/mL will float while any substance that has a density greater than 1.00g/mL will ______.
Density = Mass (g) / Volume (mL)