DAY 1
1
Table of Contents Entry
Date
Left page item
PG
Date
Right page item
9-8
A Day
Properties of water
independent practice
10
9-8
Properties of water
guided note
11
9-9
B Day
Properties of water
independent practice
10
9-9
Properties of water
guided note
11
This information should be on the first page of your
INB labeled
TABLE OF CONTENTS
2
PG
Do “IT” Now
ANSWER ON LEFT-SIDE pg.10
Make a list of 6 – 10 things that you
know or think you know about water.
These things can include any unique
characteristics or properties.
Having trouble…think about what you
learned in BIOLOGY LAST YEAR
3
Water is the solvent of life

Objective 1: Explain the properties
of water at a conceptual level
4
The unique properties of
water:
1. Polar Molecule
2. Cohesion/Adhesion
3. Universal Solvent
5
1. Polar covalent ~ water
In a water molecule, the oxygen is
more electronegative than hydrogen
• Oxygen has
a slight
negative
charge
• Hydrogen
has a slight
positive
charge and
are pulled
toward O
partial
negative
6
partial
positive
2. Cohesion/Adhesion:
Cohesion is the ability
of water molecules
stick together
Adhesion is the
ability of water
molecules to stick to
other to other
surfaces
7
What is Surface Tension?
Surface tension- the
ability for water to
resist external forces
on the molecules
Ex: why water
striders are able to
look like they are
“floating”
SURFACE TENSION
8
Cohesion:
water molecules
can move great
distances
9
3. Universal solvent

Water is the universal solvent. This
means it can dissolve nearly everything.
This polar molecule allows it to become
attracted to many other kinds of
molecules.
10
Another unique property of
water…Hydrogen bonding
• Hydrogen atoms in one
polar covalent molecule
are attracted to an
electronegative atom in
another polar molecule
• This creates H-bonds
• Draw this picture in
NOTEBOOK
11

Objective 2: Explain how water's
properties are essential for life on Earth
12
Why water being a universal
solvent is essential to life:

Since water is the universal solvent, it can dissolve
practically anything

When water dissolves a chemical, nutrient, or mineral,
it carries these important compounds with it

Water thus serves as a vehicle to carry important
chemicals & nutrients to living things
13
Why Water’s Polarity matters:

Because of water being polar, H20 molecules exhibit
great surface tension.


Surface tension: the ability of water to resist external
forces; this is why bugs look like they can “walk” on
water
The surface tension leads to providing organisms with
water
14

Objective #3: Provide examples of
properties of H2O that are essential for
life.
15
Water has high surface
tension

Example: Water’s high surface tension
allows water to move through plants and
stems

Another example: High surface tension
allows water to travel along blood vessels
(as one molecule moves it pulls the others
with it)
16
Water is the only natural substance
to exist in 3 states of matter

Example for why this matters: It is a good thing that ice floats
because if not, rivers & lakes would freeze solid and all life
would die
17
Independent practice:
Complete problems #1-8
Write your answers in complete
sentences on the Practice Sheet
You will be given 10 minutes to
complete this then we will take the
EXIT SLIP
18
Independent Practice
Complete the Properties of Water Independent
Practice Worksheet on PAGE 8of your
Interactive Notebook.
Home Learning
Complete the Properties of Water Home
Learning Worksheet on PAGE 10 of your
Interactive Notebook
19
Exit Slip- Total of 4 questions
1. Pick ONE property we discussed or observed of water
and explain how that property works on a molecular level.
2. Without this property of water, plants would not be able
to obtain much the necessary minerals from the earth.
a.
Water is tasteless
b.
Water is colorless
c.
Water has a boiling point of 100 degrees Celsius
d.
Water is a universal solvent
20
Exit Slip continued
3. Why can water have no net charge but have slight charges in
different parts of the molecule?
a. The oxygen end is slightly negative and the hydrogen end is slightly positive
b. The hydrogen end is slightly negative and the
oxygen end is slightly positive
c. The hydrogen and oxygen ends change in polarity
d. Because it is hydrophobic
4. TRUE OR FALSE: Ice is less dense than water.
Explain the reasoning for your answer in 1-2 sentences.
21
Day 2
22
Table of Contents Entry
Date
Left page item
PG
Date
Right page item
PG
9-10
A Day
LAB Equipment
12
9-10
List of apparatuses
13
9-11
B Day
LAB Equipment
12
9-11
List of apparatuses
13
This information should be on the first page of your
INB labeled
TABLE OF CONTENTS
23
Lab Safety Reminder

Wear your provided safety gear at all
times

No running or playing in lab area

Work diligently and with a purpose

No switching groups
24
“Explore” Lab Time

On page 12 of your notebook create the
following chart giving yourself space
between each Station # 1-6.
Station #1
Station #4
Station #2
Station #5
Station #3
Station #6
25
Rotation Schedule
YOU MUST ROTATE IN ORDER OF YOUR NUMBER.
1
6
2
5
3
4
26
Today’s Submission
 All
students need to submit
their own copy of the lab work.
 This
is an in-class assignment
and needs to be completed
during the class session.
 Students
need to work
diligently and with a purpose.
27