AP BIO UNIT 1 TEST- PRACTICE TEST
QUESTIONS AND CORRECT
ANSWERS
hydrogen bond - ans-which of the following is most easily broken?
rr rr rr rr rr rr rr rr rr rr
a. hydrogen bond
rr rr
b. triple covalent bond
rr rr rr
c. single covalent bond
rr rr rr
d. ionic bond
rr rr
covalent - ans-what type of bond is formed when atoms share electrons?
rr rr rr rr rr rr rr rr rr rr rr
a. ionic
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b. covalent
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c. hydrogen
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all of the above - ans-water molecules are
rr rr rr rr rr rr rr
a. polar
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b. hydrogen bonded to one another
rr rr rr rr rr
c. cohesive
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d. all of the above
rr rr rr rr
Cl - ans-
rr rr
which of the following elements is not one of the four most common in living organisms
rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr
a. C
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b. N
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c. O
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d. Cl
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cohesion - ans-water's property of surface tension is due to
rr rr rr rr rr rr rr rr rr
a. cohesion
rr
b. adhesion
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c. high specific heat
rr rr rr
d. ionic bonding
rr rr
atoms together in molecules, molecules to other molecules - ans-
rr rr rr rr rr rr rr rr rr
ionic and covalent bonds attach ___ while hydrogen bonds attach ___
rr rr rr rr rr rr rr rr rr rr
a. molecules to other molecules, atoms together in molecules
rr rr rr rr rr rr rr rr
b. water molecules to surfaces, water molecules to each other
rr rr rr rr rr rr rr rr rr
c. atoms together in molecules, molecules to other molecules
rr rr rr rr rr rr rr rr
d. water molecules to each other, water molecules to surfaces
rr rr rr rr rr rr rr rr rr
, the pH goes above 7 - ans-what a solution becomes increasingly basic
rr rr rr rr rr rr rr rr rr rr rr
a. the pH goes down
rr rr rr rr
b. the number of H+ ions increases
rr rr rr rr rr rr
c. the pH remains the same
rr rr rr rr rr
d. the pH goes above 7
rr rr rr rr rr
the number of electrons in the outermost energy level - ans-
rr rr rr rr rr rr rr rr rr rr
the number of bonds that an atom will make with other atoms is related to
rr rr rr rr rr rr rr rr rr rr rr rr rr rr
a. the number of electrons in the innermost shell
rr rr rr rr rr rr rr rr
b.the number of neutrons in the nucleus
rr rr rr rr rr rr
c. the number of electrons in the outermost energy level
rr rr rr rr rr rr rr rr rr
d. the number of neutrons in the outermost energy level
rr rr rr rr rr rr rr rr rr
the pH of water to go down - ans-When HCl is dissolved in water, it makes H+ ions and Cl-
rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr
ions. This causes _____.
rr rr rr rr
a. the pH of the water to go up.
rr rr rr rr rr rr rr rr
b. a pH reading of 15.
rr rr rr rr rr
c. the pH of the water to go down.
rr rr rr rr rr rr rr rr
d. a pH reading of 7.
rr rr rr rr rr
It is a universal solvent. - ans-Which of the following is not true about water?
rr rr rr rr rr rr rr rr rr rr rr rr rr rr
a. It dissolves other polar molecules.
rr rr rr rr rr
b. Drops cling together due to hydrogen bonding.
rr rr rr rr rr rr rr
c. It is a universal solvent.
rr rr rr rr rr
d. It is less dense as a solid than as a liquid.
rr rr rr rr rr rr rr rr rr rr rr
100X more H+ - ans- rr rr rr rr
A solution of pH 6 contains ____ than the same amount of solution of pH 8.
rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr
a. 4X more H+ c. 100X less H+
rr rr rr rr rr rr rr
b. 100X more H+ d. 2X more H+
rr rr rr rr rr rr rr
Solvent...solute...acidic - ans- rr rr
A can of soda consists mostly of sugar dissolved in water, with some carbon dioxide gas
rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr
that makes it fizzy and makes the pH less than 7. In chemical terms you could say that
rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr
soda is an aqueous solution, where water is the _____, sugar is an _____, and carbon
rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr
dioxide makes the solution _____. rr rr rr rr
a. Solvent ... solute ...basic
rr rr rr rr
b. Solute ... solvent ...basic
rr rr rr rr
c. Solvent...solute...acidic
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d. Solute ... solvent ...acidic
rr rr rr rr
Donates H+ when conditions become too basic and accepts H+ ions when conditions
rr rr rr rr rr rr rr rr rr rr rr rr
QUESTIONS AND CORRECT
ANSWERS
hydrogen bond - ans-which of the following is most easily broken?
rr rr rr rr rr rr rr rr rr rr
a. hydrogen bond
rr rr
b. triple covalent bond
rr rr rr
c. single covalent bond
rr rr rr
d. ionic bond
rr rr
covalent - ans-what type of bond is formed when atoms share electrons?
rr rr rr rr rr rr rr rr rr rr rr
a. ionic
rr
b. covalent
rr
c. hydrogen
rr
all of the above - ans-water molecules are
rr rr rr rr rr rr rr
a. polar
rr
b. hydrogen bonded to one another
rr rr rr rr rr
c. cohesive
rr
d. all of the above
rr rr rr rr
Cl - ans-
rr rr
which of the following elements is not one of the four most common in living organisms
rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr
a. C
rr
b. N
rr
c. O
rr
d. Cl
rr
cohesion - ans-water's property of surface tension is due to
rr rr rr rr rr rr rr rr rr
a. cohesion
rr
b. adhesion
rr
c. high specific heat
rr rr rr
d. ionic bonding
rr rr
atoms together in molecules, molecules to other molecules - ans-
rr rr rr rr rr rr rr rr rr
ionic and covalent bonds attach ___ while hydrogen bonds attach ___
rr rr rr rr rr rr rr rr rr rr
a. molecules to other molecules, atoms together in molecules
rr rr rr rr rr rr rr rr
b. water molecules to surfaces, water molecules to each other
rr rr rr rr rr rr rr rr rr
c. atoms together in molecules, molecules to other molecules
rr rr rr rr rr rr rr rr
d. water molecules to each other, water molecules to surfaces
rr rr rr rr rr rr rr rr rr
, the pH goes above 7 - ans-what a solution becomes increasingly basic
rr rr rr rr rr rr rr rr rr rr rr
a. the pH goes down
rr rr rr rr
b. the number of H+ ions increases
rr rr rr rr rr rr
c. the pH remains the same
rr rr rr rr rr
d. the pH goes above 7
rr rr rr rr rr
the number of electrons in the outermost energy level - ans-
rr rr rr rr rr rr rr rr rr rr
the number of bonds that an atom will make with other atoms is related to
rr rr rr rr rr rr rr rr rr rr rr rr rr rr
a. the number of electrons in the innermost shell
rr rr rr rr rr rr rr rr
b.the number of neutrons in the nucleus
rr rr rr rr rr rr
c. the number of electrons in the outermost energy level
rr rr rr rr rr rr rr rr rr
d. the number of neutrons in the outermost energy level
rr rr rr rr rr rr rr rr rr
the pH of water to go down - ans-When HCl is dissolved in water, it makes H+ ions and Cl-
rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr
ions. This causes _____.
rr rr rr rr
a. the pH of the water to go up.
rr rr rr rr rr rr rr rr
b. a pH reading of 15.
rr rr rr rr rr
c. the pH of the water to go down.
rr rr rr rr rr rr rr rr
d. a pH reading of 7.
rr rr rr rr rr
It is a universal solvent. - ans-Which of the following is not true about water?
rr rr rr rr rr rr rr rr rr rr rr rr rr rr
a. It dissolves other polar molecules.
rr rr rr rr rr
b. Drops cling together due to hydrogen bonding.
rr rr rr rr rr rr rr
c. It is a universal solvent.
rr rr rr rr rr
d. It is less dense as a solid than as a liquid.
rr rr rr rr rr rr rr rr rr rr rr
100X more H+ - ans- rr rr rr rr
A solution of pH 6 contains ____ than the same amount of solution of pH 8.
rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr
a. 4X more H+ c. 100X less H+
rr rr rr rr rr rr rr
b. 100X more H+ d. 2X more H+
rr rr rr rr rr rr rr
Solvent...solute...acidic - ans- rr rr
A can of soda consists mostly of sugar dissolved in water, with some carbon dioxide gas
rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr
that makes it fizzy and makes the pH less than 7. In chemical terms you could say that
rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr
soda is an aqueous solution, where water is the _____, sugar is an _____, and carbon
rr rr rr rr rr rr rr rr rr rr rr rr rr rr rr
dioxide makes the solution _____. rr rr rr rr
a. Solvent ... solute ...basic
rr rr rr rr
b. Solute ... solvent ...basic
rr rr rr rr
c. Solvent...solute...acidic
rr
d. Solute ... solvent ...acidic
rr rr rr rr
Donates H+ when conditions become too basic and accepts H+ ions when conditions
rr rr rr rr rr rr rr rr rr rr rr rr
