Chapter 2/3 Part 3 Question Preview (ID: 14046)


Environmental Science Biochemistry Chapter. TEACHERS: click here for quick copy question ID numbers.

Why is the dissociation of water important?
a) It breaks water into the ions that define acids and bases.
b) It combines ions to make acids and bases.
c) It neutralizes acids and bases.
d) It breaks water into atoms that define acids and bases.

All of the following statements are true EXCEPT.
a) Acids have a pH < 7 and have more Hydronium ions than Hydroxide.
b) Bases have a pH < 7 and have more Hydroxide than Hydronium.
c) Bases have a pH > 7 and have more Hydroxide ions than Hydroniums.
d) Acids taste sour and are corrosive while bases are bitter and slippery.

________ neutralizes small amount of acids and bases to maintain a certain pH.
a) Hydroxide
b) Hydronium
c) Buffers
d) pH

What do acids and bases have in common?
a) Both contain more hydronium than hydroxide ions.
b) Both contain more hydroxide than hydronium ions.
c) Both must contain carbon.
d) Both contain hydronium and hydroxide ions.

Why is water polar?
a) Oxygen has more protons and pulls the electrons closer to it and away from hydrogen.
b) Oxygen has more electrons and pulls the protons closer to it and away from hydrogen.
c) Hydrogen has more protons and pulls the electrons closer to it and away from oxygen.
d) Hydrogen has more electrons and pulls the protons closer to it and away from oxygen.

Water is called the _________ because it is very good at dissolving a lot of things.
a) Homogeneous solvent
b) Universal solvent
c) Universal solute
d) Aqueous solvent

Why is hydrogen bonding important in water?
a) It holds the oxygen and hydrogen together.
b) It gives water is polar properties.
c) It is responsible for the properties of water.
d) It makes water stick to everything.

_____ is the attraction between like particles.
a) specific heat
b) capillarity
c) adhesion
d) cohesion

_______ is the attraction between unlike particles.
a) adhesion
b) cohesion
c) capillarity
d) specific heat

_________ is the property of water that plants use to pull water from their roots to their leaves.
a) adhesion
b) capillarity
c) cohesion
d) surface tension

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