Chapter 3 Test Bank AP Bio Exam Questions
With Correct Answers
In a single molecule of water, two hydrogen atoms are bonded to a single oxygen atom by -
answer✔polar covalent bonds
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 - answer✔a hydrogen bond
An example of a hydrogen bond is the bond between - answer✔the H of one water molecule and the O
of another water molecule
Water is able to form hydrogen bonds because - answer✔the bonds that hold together the atoms in a
water molecule are polar covalent bonds
What gives rise to the cohesiveness of water molecules - answer✔hydrogen bonds
Which of the following effects is produced by the high surface tension of water - answer✔A water
strider can walk across the surface of a small pond
Which of the following takes place as an ice cube cools a drink - answer✔Kinetic energy in the drink
decreases
Which of the following statements correctly defines a kilocalorie - answer✔the amount of heat required
to raise the temperature of 1 kg of water by 1°C
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 - answer✔10.0°C
Waterʹs high specific heat is mainly a consequence of the - answer✔absorption and release of heat
when hydrogen bonds break and form
Which type of bond must be broken for water to vaporize - answer✔hydrogen bonds
Temperature usually increases when water condenses. Which behavior of water is most directly
responsible for this phenomenon - answer✔the release of heat by the formation of hydrogen bonds
At what temperature is water at its densest? - answer✔4°C
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