Which of the following has the highest concentration of hydroxide ions?
A) pH 1
B) pH 14
C) pH 7
D) pH 10
E) pH 2
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Question 2) Water has the ability to dissolve polar covalent molecules like sucrose by
A) forming hydration spheres around the molecule.
B) pulling atoms out of the molecule and into solution.
C) creating crystals of positively and negatively charged atoms.
D) taking electrons from the polar covalent molecule.
E) ionization.
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Question 3) Muddy lake water is an example of a(n)
A) colloid.
B) suspension.
C) solute.
D) solvent.
E) solution.
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Question 4) Molecules that do not readily interact with water are called
A) inert.
B) stable.
C) hydrophobic.
D) unstable.
E) hydrophilic.
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Question 5) A(n) ________ is a homogeneous mixture containing a solvent and a solute.
A) emulsion
B) blend
C) compound
D) infusion
E) solution
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Question 6) Soluble inorganic compounds whose solutions will conduct an electric current are called
A) electrolytes.
B) ions.
C) isotopes.
D) free radicals.
E) metabolites.
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Question 7) Which property of water helps keeps body temperature stabilized?
A) kinetic energy
B) lubrication
C) surface tension
D) reactivity
E) thermal inertia
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Question 8) Which of the following statements about water is false?
A) It is composed of polar molecules.
B) It is responsible for much of the mass of the human body.
C) It has a relatively low heat capacity.
D) It can dissolve many substances.
E) It contains hydrogen bonds.
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Question 9) Hydrophilic molecules readily associate with
A) lipid molecules.
B) hydrophobic molecules.
C) water molecules.
D) acids.
E) salts.
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Question 10) Oppositely charged ions in solution are prevented from combining by
A) heat capacity of water.
B) hydration spheres.
C) water's nonpolar nature.
D) free radicals.
E) hydrogen bonding.
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