1. PROPERTIES OF WATER

2. Water is Polar
Water is a polar molecule, meaning that there is an uneven distribution of charge
Water has a slight negative charge near the oxygen and slight positive charge near the hydrogen atoms.

3. Water forms hydrogen bonds
Because they are polar, water molecules are attracted to each other.
The negative oxygen is attracted to the positive hydrogen
Many of water’s special properties come from its ability to form hydrogen bonds

4. Adhesion & Cohesion
Cohesion is an attraction between molecules of the same substance.
Adhesion is an attraction between molecules of different substances.

5. Surface Tension Cohesion can cause surface tension.
Since the water doesn’t have to bond with anything “above it’ those bonds are stronger and the water skeeter can walk on it

6. Capillary Action Adhesion can causes capillary action
Water can get pulled up small tubes, like the veins of plants

7. Water expands as it freezes
Ice is less dense
Hydrogen bonds push water molecules further apart from each other
Ice floats on water
Protects organisms underneath
Acts like insulation

9. The Universal Solvent
Water can disassemble and rearrange other molecules

12. High Heat Capacity
Water can absorb & release large amounts of energy without changing temperature
Keeps cells at even temperatures
Stabilizes global temperature
Evaporative cooling
“Specific heat”

13. This is my doggie Otis