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WorksheetsAP Biology: Biochemistry and Water Review
Total questions: 21
Worksheet time: 17mins
What do we call an atom that has lost or gained electrons?
ion
metal
nonmetal
isotope
What type of bond shares electrons?
covalent
ionic
hydrogen
van der waals
Water is an example of a _____________ substance.
polar
ionic
living
nonpolar
Which is true regarding covalent and hydrogen bonding in water.
Hydrogen bonding occurs between two water molecules while covalent occurs between atoms in a single molecule
Hydrogen bonding occurs between atoms in a single water molecule while covalent occurs between two water molecules.
Hydrogen bonding is the only force that water utilizes
Covalent bonding is the only force that water utilizes
Which characteristic of water molecules directly contributes to the remarkable "water walking" success of the aquatic insects pictured?
hydrogen bonds
capillary action
nonpolar covalent bonds
ionic bonds
A feature of organic compounds NOT found in inorganic compounds is the presence of:
ionizing chemical groups
electrons
carbon atoms covalently bonded to each other
oxygen
Air that is dry changes temperature quickly, while air that is moist retains its temperature. What property allows for this regulation of temperature?
The heat of fusion of the nitrogen in the air, due to free electrons
The high electric potential of the air, which results from the static charges of the molecules in dry conditions
the greenhouse effect, due to the increase in carbon dioxide in the atmosphere
the high specific heat of water, which results from the polarity and hydrogen bonding
Which of the following is an example of a hydrogen bond?
The peptide bond between amino acids in a protein
The bond between an oxygen atom and a hydrogen in the carboxyl group of a fatty acid
The attraction between a hydrogen of one water molecule and the oxygen of another water molecule
The bond between carbon and hydrogen in methane
nonpolar molecules
polar molecules
Surface tension of water is the cohesive force between water molecules and other molecules.
True
False
Cohesive force between water molecules and adhesive force between water molecules and other molecules enable this phenomenon to occur.
Surface tension
Capillary action
Float on water
Photosynthesis
Which end of the water molecule has a slightly positive charge?
The hydrogen end
The oxygen end
Both ends are slightly positive
Neither end is positive
What word describes when water is attracted to other substances?
Cohesion
Adhesion
Capillary action
Surface tension
When water molecules stick easily to other water molecules, this is called what?
Cohesion
Adhesion
Solution
Polar molecule
Water beads up on the surface of a penny because of what property?
Adhesion
High surface tension
Universal solvent
Changes in density
The fact that ice floats on liquid water is due to the fact that water's solid form is _____________ than its liquid form.
Less polar
More polar
Less dense
More dense
The tightness across the surface of water that enables insects to walk on it is
Adhesion
Capillary action
Surface tension
Polarity
