CHAPTER 3 TEST BANK AP BIO EXAM
QUESTIONS WITH ALL CORRECT
ANSWERS.
1. In a single molecule of water, two hydrogen atoms are bonded to a single
oxygen atom by ANS >>> polar covalent bonds
2. The slight negative charge at one end of one water molecule is attracted to
the slight positive charge of another water molecule. What is this attraction
called ANS >>> a hydrogen bond
3. An example of a hydrogen bond is the bond between ANS >>> the H of
one water molecule and the O of another water molecule
4. Water is able to form hydrogen bonds because ANS >>> the bonds that hold
together the atoms in a water molecule are polar covalent bonds
5. What gives rise to the cohesiveness of water molecules ANS >>> hydrogen
bonds
6. Which of the following effects is produced by the high surface tension of
water ANS >>> A water strider can walk across the surface of a small pond
7. Which of the following takes place as an ice cube cools a drink ANS >>>
Kinetic energy in the drink decreases
8. Which of the following statements correctly defines a kilocalorie ANS >>> the
amount of heat required to raise the temperature of 1 kg of water by 1°C
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, 9. The nutritional information on a cereal box shows that one serving of a dry
cereal has 200 kilocalories. If one were to burn one serving of the cereal, the
amount of heat given off would be sufficient to raise the temperature of 20 kg
of water how many degrees Celsius ANS >>> 10.0°C
10. Water¹s high specific heat is mainly a consequence of the ANS >>>
absorption and release of heat when hydrogen bonds break and form
11. Which type of bond must be broken for water to vaporize ANS >>> hydroge
bonds
12. Temperature usually increases when water condenses. Which behavior of
water is most directly responsible for this phenomenon ANS >>> the release of
heat by the formation of hydrogen bonds
13. At what temperature is water at its densest? ANS >>> 4°C
14. Why does ice float in liquid water ANS >>> Hydrogen bonds stabilize and
keep the molecules of ice farther apart than the water
molecules of liquid water
15. Hydrophobic substances such as vegetable oil are ANS >>> nonpolar
substances that repel water molecules
16. One mole (mol) of a substance is ANS >>> A and D (6.02 x 10^23
molecules of the substance, the molecular mass of the substance is expressed
in grams)
17. How many molecules of glucose (C6H2O6 molecular mass =180 daltons)
would be present
in one mole of glucose ANS >>> 6.02 × 1023
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QUESTIONS WITH ALL CORRECT
ANSWERS.
1. In a single molecule of water, two hydrogen atoms are bonded to a single
oxygen atom by ANS >>> polar covalent bonds
2. The slight negative charge at one end of one water molecule is attracted to
the slight positive charge of another water molecule. What is this attraction
called ANS >>> a hydrogen bond
3. An example of a hydrogen bond is the bond between ANS >>> the H of
one water molecule and the O of another water molecule
4. Water is able to form hydrogen bonds because ANS >>> the bonds that hold
together the atoms in a water molecule are polar covalent bonds
5. What gives rise to the cohesiveness of water molecules ANS >>> hydrogen
bonds
6. Which of the following effects is produced by the high surface tension of
water ANS >>> A water strider can walk across the surface of a small pond
7. Which of the following takes place as an ice cube cools a drink ANS >>>
Kinetic energy in the drink decreases
8. Which of the following statements correctly defines a kilocalorie ANS >>> the
amount of heat required to raise the temperature of 1 kg of water by 1°C
https://www.stuvia.com/user/CULTIVATED 1/6
, 9. The nutritional information on a cereal box shows that one serving of a dry
cereal has 200 kilocalories. If one were to burn one serving of the cereal, the
amount of heat given off would be sufficient to raise the temperature of 20 kg
of water how many degrees Celsius ANS >>> 10.0°C
10. Water¹s high specific heat is mainly a consequence of the ANS >>>
absorption and release of heat when hydrogen bonds break and form
11. Which type of bond must be broken for water to vaporize ANS >>> hydroge
bonds
12. Temperature usually increases when water condenses. Which behavior of
water is most directly responsible for this phenomenon ANS >>> the release of
heat by the formation of hydrogen bonds
13. At what temperature is water at its densest? ANS >>> 4°C
14. Why does ice float in liquid water ANS >>> Hydrogen bonds stabilize and
keep the molecules of ice farther apart than the water
molecules of liquid water
15. Hydrophobic substances such as vegetable oil are ANS >>> nonpolar
substances that repel water molecules
16. One mole (mol) of a substance is ANS >>> A and D (6.02 x 10^23
molecules of the substance, the molecular mass of the substance is expressed
in grams)
17. How many molecules of glucose (C6H2O6 molecular mass =180 daltons)
would be present
in one mole of glucose ANS >>> 6.02 × 1023
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