A neutral solution... a. has no H+ b. has no OH c. has equal amounts of Ht and OH- d. is
hydrophobic e. has a pHi of 0 Buffers prevent wide swings in pH. Hw do buffers work? a. Soak
up extra acid and base b. Accept or release H+ c. Accept or release OH d. Convert Ht and OH- to
water e. Monitor the blood pH Polar covalent bonds form when... a. electrons are shared
unequally between atoms. b. more than one pair of electrons is shared c. ions are formed. d. an
acid and base are combined e. atoms from two molecules are attracted to each other. The
hydrogen bond between two water molecules arises because water is a. polar. b. nonpolar c. a
liquid. d. a small molecule. e. hydrophobic. Water moves through a plant because of the property
of a. high heat of fusion b. high heat of vaporization c. high specific heat d. cohesion As ice
melts, it: a. Absorbs heat from its surroundings b. Becomes less dense c. Increases its property of
cohesion d. Increases its heat of vaporization Which of the following best explains the molecular
complexity of living organisms? Think! a. The large number of different monomers allows the
construction of many polymers. b. Each organism has its own unique set of monomers for use in
constructing polymers. c. Condensation reactions can create different polymers because they can
use virtually any molecu the cell d. While there are not many macromolecules in cells, each one
has many different functions. e. A small number of monomers can be assembled into large
polymers with many different seque
Solution
AS PER CHEGG POLICY, PROCEEDING TO ANSWER ONLY THE FIRST 4
QUESTIONS/SUBPARTS, THAT IS, QUESTIONS 1 TO 4:
Q.1 A neutral solution...
c. has equal amounts of H+ and OH- - this is because it is neutral so it should not be carrying
any net charge which is ony possible if the charged molecules are in equal concentration.
Q.2 Buffers prevent wide swings in pH by working:
b. Accepting or releasing H+ - this is because the addition of a strong base or an acid leads to
neutralization of the charged molecules proceed to yield neutral substances such as water and
hence only a very slight change in pH occurs.
Q.3 Polar covalent bonds form when:
a. Electrons are shared unequally between atoms - this is because covalent bonds are formed by
the sharing of electrons so that each attains their stable valence shell electronic configuration,
and differences in electronegativity of participating atoms causes the polar nature.
Q.4 The hydrogen bond between two water molecules arises because water is:
a. Polar - The angle between the two H-O bonds and Oxygen atom\'s highly electronegative
nature causes the covalent bond to take up a polar nature, leading to suitable conditions on the
hydrophobic e. has a pHi of 0 Buffers prevent wide swings in pH. Hw do buffers work? a. Soak
up extra acid and base b. Accept or release H+ c. Accept or release OH d. Convert Ht and OH- to
water e. Monitor the blood pH Polar covalent bonds form when... a. electrons are shared
unequally between atoms. b. more than one pair of electrons is shared c. ions are formed. d. an
acid and base are combined e. atoms from two molecules are attracted to each other. The
hydrogen bond between two water molecules arises because water is a. polar. b. nonpolar c. a
liquid. d. a small molecule. e. hydrophobic. Water moves through a plant because of the property
of a. high heat of fusion b. high heat of vaporization c. high specific heat d. cohesion As ice
melts, it: a. Absorbs heat from its surroundings b. Becomes less dense c. Increases its property of
cohesion d. Increases its heat of vaporization Which of the following best explains the molecular
complexity of living organisms? Think! a. The large number of different monomers allows the
construction of many polymers. b. Each organism has its own unique set of monomers for use in
constructing polymers. c. Condensation reactions can create different polymers because they can
use virtually any molecu the cell d. While there are not many macromolecules in cells, each one
has many different functions. e. A small number of monomers can be assembled into large
polymers with many different seque
Solution
AS PER CHEGG POLICY, PROCEEDING TO ANSWER ONLY THE FIRST 4
QUESTIONS/SUBPARTS, THAT IS, QUESTIONS 1 TO 4:
Q.1 A neutral solution...
c. has equal amounts of H+ and OH- - this is because it is neutral so it should not be carrying
any net charge which is ony possible if the charged molecules are in equal concentration.
Q.2 Buffers prevent wide swings in pH by working:
b. Accepting or releasing H+ - this is because the addition of a strong base or an acid leads to
neutralization of the charged molecules proceed to yield neutral substances such as water and
hence only a very slight change in pH occurs.
Q.3 Polar covalent bonds form when:
a. Electrons are shared unequally between atoms - this is because covalent bonds are formed by
the sharing of electrons so that each attains their stable valence shell electronic configuration,
and differences in electronegativity of participating atoms causes the polar nature.
Q.4 The hydrogen bond between two water molecules arises because water is:
a. Polar - The angle between the two H-O bonds and Oxygen atom\'s highly electronegative
nature causes the covalent bond to take up a polar nature, leading to suitable conditions on the
