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Biology 12: Water Properties and Living Things Section 2.3
Read pages 26-27 BEFORE answering the following questions 
1.
What does it mean when water is described as being polar?
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2. Describe how the polarity of the water molecule results in hydrogen bonding.
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3. Complete the following table. (
Extraordinary Properties of Water
Property
Explanation and why this is
important (please mention
the words “hydrogen bonds”
in each of your
1. Water is liquid
at room
temperature.
2. Water is a
universal
solvent for
polar molecules
3. Water
molecules are
cohesive
4. The
temperature
of water rises
and falls slowly
5.
Frozen water
is less dense
than liquid
water
Diagram
Question I still have…
4. How does water’s ability to be cohesive and adhesive help plants get the
proper amount of water they require in order to survive?
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5. We know that water is polar and is a great solvent. Why is this so important
in our bodies? (Hint: molecule size and movement in our system).
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6. What is the difference between the dissociation of an acid compared to a
base? Give an example of each.
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7. On the pH scale which numbers indicate a basic solution and why? Which
numbers indicate an acidic solution and why?
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8. What is a buffer?
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9. Name one important buffer in the body. Explain how this buffer works and it’s
significance in the body.
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