1. Properties of Water
Chapter 2
Section 2.2 pg 40 & 41

2. W-A-T-E-R
More than _______ of the earth’s surface is covered with water (H20)

3. WATER Atomic Structure = _______________ bonded to _______________
The ________side: slightly _________ (+)
The _______ side: slightly _______ (-)

4. WATER: A Polar Molecule
Water Molecules are _________! WHY?
…Because there is ___________________
________________________ between the oxygen and hydrogen atoms
 Results in water molecules being attracted to each other, forming bondscalled _________________

5. Why is Polarity So Important?
It allows water to dissolve many substances including other _______________ and _________________________

6. Water Molecules are Held Together by Hydrogen Bonds
Hydrogen bonds are weak bonds between a _________________ in one molecule and a ___________________ region of another molecule
Hydrogen bonds are _______________ to cause water to _____________________
_________________________

7. Hydrogen Bonding

8. Hydrogen Bonding
Animation of water binding through H bonds
As a result of hydrogen bonding 2 properties of water result
Cohesion and adhesion

9. Two properties of water result from Hydrogen Bonding
Cohesion- ___________________________
________________ (ex. water attracted to water)
> _______________ cohesion of water molecules at the surface of a body of water ex. bug “walking on water”

10. Two properties of water result from Hydrogen Bonding
Adhesion – __________________________
_______________________________________
(ex. Water molecules attracted to a glass)
> _______________ the adhesion of water molecules & another substance moving up against gravity

11. How is Hydrogen Bonding related to Temperature?
Hydrogen bonding makes water able to _____
_____________________ before it gets hot and changes temperature because hydrogen bonds must break in order for the temperature to change
This is called having a
______________________

12. Water also has a unique density
Solid water is _________________ than liquid water
ex. Ice floats (icebergs)
Ponds freeze from top down