Name: _____________________________________________________ Date: ________________ Period: _______________
Water and Its Properties Powerpoint Guide #12
1. What are the 4 characteristics of water (H2O)?
a. _______________________________________________________________________________________________
b. ______________________________________________________________________________________________
c. _______________________________________________________________________________________________
d. _______________________________________________________________________________________________
2. Draw and label 3 water molecules and LABEL 1 oxygen, 2 hydrogen atoms, the covalent bond that holds
together the oxygen/hydrogen and a hydrogen bond that holds together water molecules.
3. What does it mean to be a polar molecule?
4. Why is water a polar molecule?
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5.
Fill in the table below:
Property
WATER PROPERTIES
Description
Example(s)
Cohesion
Define surface tension:
Adhesion
Define capillary action:
High specific heat
Why is this property important to biology?
Low density in solid
form
Excellent solvent
Why is this property important to biology?
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6. Define the following vocabulary words:
a. Solution: _______________________________________________________________________________________________________
b. Solvent: ________________________________________________________________________________________________________
c. Solute: __________________________________________________________________________________________________________
d. Hydrophilic (polar): _________________________________________________________________________________________
e. Hydrophobic (nonpolar): ___________________________________________________________________________________
7. Water can separate in what 2 ions?
a.
b.
8. Define the following vocabulary words:
a. Acid: _______________________________________________________________________________________________________
b. Base: ________________________________________________________________________________________________________
c. pH: __________________________________________________________________________________________________________
9. Acids has a ________________ (low or high) concentration (amount) of H+ ions and a _____________ (low or high)
concentration of OH- ions.
10. Bases has a ________________ (low or high) concentration (amount) of H+ ions and a _____________ (low or high)
concentration of OH- ions.
11. Draw out and label the pH scale. Where are # 1-6? 7? 8-14? Neutral? Acids? Bases?
12. What is a buffer? ______________________________________________________________________________________________________
13. What is the most common buffer used in biology? ________________________________________________________________
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