Warm Up: Explain what is happening in picture…why
-Take out homework: ws#2 – Vocabulary / record names if it is not done…
Agenda:
ws#3 – Notes – go in fun facts
Thought bubbles…ws#11 –Fun facts
Modern Marvels – Video & ws
Exit Ticket
Click to reveal answer;
Answer: the paper
clip is floating on the
surface of the water.
Due to the surface
tension of water!
Homework:
-Study Vocab & Concept Quiz 11/21
Ws#2- Vocabulary
- have students check their pictures..
In all phases of matter….
Show : Introduction Video
Properties of Water
 Polar molecule
 Cohesion
 Adhesion
 Universal solvent
of life
 Surface Tension
 Capillary Action
 Heat Sink
Why does water form?
In a water molecule two
hydrogen atoms form single
covalent bonds with an oxygen
atom.
Covalent Bond
Strong bond!!!
The bonds are formed to
create a “stable” molecule.
Oxygen needs 2 more
electrons to be stable.
Hydrogen needs 1 more
electron to be stable.
*Gives water more structure
than other liquids*
Polar Molecule
 A water molecule is
polar
 opposite ends of the
molecule with
opposite charges.
Ionic/hydrogen Bond
Weak Bond ; like two
magnets: opposites attract
Show video segment
0 minute to 2:10 STOP video
Adhesion
Cohesion
 Ability of water to stick to
 Ability of water to “stick” to
other surfaces
 Examples:
 Water on your skin
 Water on the window
itself.
 Because water is polar it is
attracted to other water
molecules.
 Example
 The water in this picture.
 Why water continues to flow
out of the facet in a single
stream.
Show video segment
2:10 – 3:14 STOP video
Water ……a.k.a the Universal Solvent
Water is the solvent of Life!
- Because of the polarity water is
able to dissolve the many
substances.
Solute – substance dissolved in a
solvent to form a solution
Solvent – fluid that dissolves
solutes
Show video segment
3:14 – End of video
Surface Tension
•Hydrogen bonds
make water
cohesive and
gives water
surface tension.
• You can see
surface tension in
the dome of water
on the penny…it
jiggles like jello.
Watch all of video
segment…click here
Capillary Action
Because water has both adhesive and
cohesive properties, capillary action is
present.
Capillary action is one of the major
reasons that trees and other plants
can grow very tall.
It is the ability of water to creep up thin
tubes.
Capillary Action =
Ex: Think water in a straw
Ex: Water moves through trees this way
Show video segement 1 to
all classes.
Segment one – show all
Segment two- 5th & 8th only
HEAT Sink!!!
Water has a high heat
capacity.
Water
Water is
cooling!
Do I look
cool?
Large bodies of water absorb
heat and provide a stable and
fair weather climate.
Watch video segment click here
0-2:00 minute
Solid
Liquid
Gas
Model of water molecules as a solid, liquid and a gas.
Properties of each phase of matter
Gas/Steam:
Liquid water:
-Molecules are close
together
-Molecules are widely
separated .
-Molecule move around
freely
-Molecule move slowly
-Molecules move rapidly
DENSITY=0.0006 g/mL
DENSITY = 1.0 g/mL
Ice:
-When water freezes,
molecules move away
from each other and
expand.
-Molecules move slightly.
-When ice forms it floats it
is less dense than water.
DENSITY = .92 g/cm3
Modern Marvel Water Video
 Students will watch DVD till end of class
 Students can take notes on paper provided.
 Turn in paper after video
 Last 10 -Minutes of class ….Students fill out exit ticket..
Exit ticket: Have students fill out
Properties of Water Thought
bubble from their notes…