AP BIO UNIT 1 TEST- PRACTICE TEST
hydrogen bond - Correct Answers -which of the following is most easily broken?
a. hydrogen bond
b. triple covalent bond
c. single covalent bond
d. ionic bond
covalent - Correct Answers -what type of bond is formed when atoms share electrons?
a. ionic
b. covalent
c. hydrogen
all of the above - Correct Answers -water molecules are
a. polar
b. hydrogen bonded to one another
c. cohesive
d. all of the above
Cl - Correct Answers -which of the following elements is not one of the four most
common in living organisms
a. C
b. N
c. O
d. Cl
cohesion - Correct Answers -water's property of surface tension is due to
a. cohesion
b. adhesion
c. high specific heat
d. ionic bonding
atoms together in molecules, molecules to other molecules - Correct Answers -ionic and
covalent bonds attach ___ while hydrogen bonds attach ___
a. molecules to other molecules, atoms together in molecules
b. water molecules to surfaces, water molecules to each other
c. atoms together in molecules, molecules to other molecules
d. water molecules to each other, water molecules to surfaces
the pH goes above 7 - Correct Answers -what a solution becomes increasingly basic
, a. the pH goes down
b. the number of H+ ions increases
c. the pH remains the same
d. the pH goes above 7
all of the above - Correct Answers -Hydrogen bonding ___________.
a. causes water molecules to cling to each other
b. allows water to absorb a lot of heat without a huge change in temperature
c. must be broken to convert water to steam
d. all of the above
It is less dense as a solid than as a liquid. - Correct Answers -Aquatic living things are
able to survive the winter thanks to which property of water?
a. It is less dense as a solid than as a liquid.
b. It is cohesive and adhesive.
c. It is the universal solvent
d. It resists changes of state (from liquid to ice or liquid to steam).
oil - Correct Answers -Which of the following is best described as hydrophobic?
a. water
b. oil
c. sugar
d. salt
the number of electrons in the outermost energy level - Correct Answers -the number of
bonds that an atom will make with other atoms is related to
a. the number of electrons in the innermost shell
b.the number of neutrons in the nucleus
c. the number of electrons in the outermost energy level
d. the number of neutrons in the outermost energy level
the pH of water to go down - Correct Answers -When HCl is dissolved in water, it makes
H+ ions and Cl- ions. This causes _____.
a. the pH of the water to go up.
b. a pH reading of 15.
c. the pH of the water to go down.
d. a pH reading of 7.
It is a universal solvent. - Correct Answers -Which of the following is not true about
water?
a. It dissolves other polar molecules.
b. Drops cling together due to hydrogen bonding.
hydrogen bond - Correct Answers -which of the following is most easily broken?
a. hydrogen bond
b. triple covalent bond
c. single covalent bond
d. ionic bond
covalent - Correct Answers -what type of bond is formed when atoms share electrons?
a. ionic
b. covalent
c. hydrogen
all of the above - Correct Answers -water molecules are
a. polar
b. hydrogen bonded to one another
c. cohesive
d. all of the above
Cl - Correct Answers -which of the following elements is not one of the four most
common in living organisms
a. C
b. N
c. O
d. Cl
cohesion - Correct Answers -water's property of surface tension is due to
a. cohesion
b. adhesion
c. high specific heat
d. ionic bonding
atoms together in molecules, molecules to other molecules - Correct Answers -ionic and
covalent bonds attach ___ while hydrogen bonds attach ___
a. molecules to other molecules, atoms together in molecules
b. water molecules to surfaces, water molecules to each other
c. atoms together in molecules, molecules to other molecules
d. water molecules to each other, water molecules to surfaces
the pH goes above 7 - Correct Answers -what a solution becomes increasingly basic
, a. the pH goes down
b. the number of H+ ions increases
c. the pH remains the same
d. the pH goes above 7
all of the above - Correct Answers -Hydrogen bonding ___________.
a. causes water molecules to cling to each other
b. allows water to absorb a lot of heat without a huge change in temperature
c. must be broken to convert water to steam
d. all of the above
It is less dense as a solid than as a liquid. - Correct Answers -Aquatic living things are
able to survive the winter thanks to which property of water?
a. It is less dense as a solid than as a liquid.
b. It is cohesive and adhesive.
c. It is the universal solvent
d. It resists changes of state (from liquid to ice or liquid to steam).
oil - Correct Answers -Which of the following is best described as hydrophobic?
a. water
b. oil
c. sugar
d. salt
the number of electrons in the outermost energy level - Correct Answers -the number of
bonds that an atom will make with other atoms is related to
a. the number of electrons in the innermost shell
b.the number of neutrons in the nucleus
c. the number of electrons in the outermost energy level
d. the number of neutrons in the outermost energy level
the pH of water to go down - Correct Answers -When HCl is dissolved in water, it makes
H+ ions and Cl- ions. This causes _____.
a. the pH of the water to go up.
b. a pH reading of 15.
c. the pH of the water to go down.
d. a pH reading of 7.
It is a universal solvent. - Correct Answers -Which of the following is not true about
water?
a. It dissolves other polar molecules.
b. Drops cling together due to hydrogen bonding.
