1. TOPIC: G.O.T. Get On Task MY GOAL: Turn to page 40 & 41 in text...
MT 09, The Compounds of Life!
TOPIC:
MY GOAL:
G.O.T.
Get
On Task
Wed
I will discover the structure of the water molecule
Turn to page 40 & 41 in text...
ISN p.70 Draw & Color:
A single water molecule
3 water molecules connected by Hydrogen bonds

2. POLARITY = OPPOSITE CHARGES
Negative OXYGEN of one H2O molecule attracts the Positive HYDROGEN of ANOTHER H20 molecule _ + +

3. Notes ISN p.71 TERM COhesion ADhesion High Specific Heat
DEFINITION
LEADS to…
HOW IT IS USED
COhesion
ADhesion
High Specific Heat
Universal Solvent
Sticking together!
Surface
Tension
Water sticking together as it moves up & Bugs walking on water
Causes water to stick to xylem tubes – move up
Sticking to something else
Capillary
Action
Amt of Energy required to change temp of water
Thermal
Stability
Homeostasis – water is resistant to temp. change
Most abundant molecule on Earth!
Provides aqueous solution for cells to perform cell reactions!
Dissolves
compounds

4. SURFace ACTive Substance Breaking Surface Tension After an Oil Spill
SURFACTANTS =
SURFace ACTive Substance
Breaking Surface Tension After an Oil Spill
Dispersant droplets containing surfactants sprayed onto oil.
Solvent (liquid) carries surfactant into the oil.
Surfactant molecules migrate to oil/water to reduce surface tension...
So small oil droplets break away from the slick.
Droplets disperse by turbulent mixing, leaving only sheen on water surface

5. NEW Oil Eating Bacteria Discovered in Gulf
Bacteria growing on & around a droplet of oil

6. Video Clip Review of Water Properties

7. Try This – ISN p.70 Polarity Cohesion Solvent Solute Water Adhesion
Water – Cohesion – Adhesion – Solute – Solvent- Polarity - Capillary action - Homeostasis
‘Opposite’
Together or share; “sticky”
Does the dissolving
Gets dissolved
Universal solvent
Stick to dif. sub.
Move sub. up
Maintain stability or balance
Polarity
Cohesion
Solvent
Solute
Water
Adhesion
Capillary action
Homeostasis 7

8. You should always review your notes each night
HOMEWORK
Be the change you wish to see in the world 8 8