1. Unit 1 Sec 2.2
Properties of Water

2. A. Polarity
Water = H2O
Oxygen and hydrogen bonded by:
Polar Molecule: electrons are not shared equally
Water = universal solvent ionic compounds
When ionic compounds are dissolved in water, _________________________.

4. Polarity of Water

5. B. Hydrogen Bonding
Hydrogen Bond- bond between a hydrogen & oxygen of 2 water molecules
bond btwn water molecules
Weakest of the three chemical bond

6. C. Cohesion and Adhesion
Cohesion: attractive force btwn particles of same kind
Adhesion: attractive force btwn 2 unlike substance
Capillarity: movement of water upward against force of gravity
Capillarity =

7. Water has polar bonding

8. Your body is 75 percent water!
Animals lose water by Animals gain water by
Urinating -Drinking
Sweating -Eating Food
Breathing

9. Essential uses of water in animals
Cooling
Chemical reactions
Transport food & waste
Makes up most of body fluids

10. Plants depend on water. Plants use water for Photosynthesis
Chemical reactions
Transportation
Plants absorb water
through their roots

11. E. Describing Solutions
Solutions: mixture where substances are distributed evenly
Solute
Solvent
Aqueous solution:

12. F. Acids and Bases Dissociation of water
Dissociation: breaking water into a positive & negative charge particle
Acids:
Solution containing more hydronium ions (H+)

13. F. Acids and Bases Bases: pH scale: measures how base or acidic
Solution containing more hydroxide ions (OH-)
pH scale: measures how base or acidic

14. An acid produces H+
A base absorbs H+