Water's exceptional ability to dissolve polar and ionic substances is a direct consequence of which property?

Answer: Its polarity (partial charges on H and O) Oxygen pulls electrons more strongly than hydrogen, giving water a permanent dipole. The partial charges interact with charged regions of solutes, surrounding and dissolving them.

Water rises in narrow xylem vessels in plants because of

Answer: Cohesion + adhesion (capillary action) Water adheres to vessel walls and coheres to itself, creating a continuous column that can rise against gravity in narrow tubes.

Which of the following is <strongnot</strong a consequence of hydrogen bonding between water molecules?

Answer: Water being a non-polar solvent Hydrogen bonds make water polar, not non-polar; A, B, and C are all direct consequences of hydrogen bonding.

AP Biology · Topic 1.1

Structure of Water and Hydrogen Bonding Practice

Q: Which of the following is <strongnot</strong a consequence of hydrogen bonding between water molecules?

Answer: Water being a non-polar solvent Hydrogen bonds make water polar, not non-polar; A, B, and C are all direct consequences of hydrogen bonding.

Part of Chemistry of Life.(SYI-1.A)

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Sample questions

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Sample 1difficulty 1/5
$Water's exceptional ability to dissolve polar and ionic substances is a direct consequence of which property?$
- A
  $Its small molecular size (fits between solutes)$
- B
  $Its polarity (partial charges on H and O)$
  check_circle
- C
  $Its non-polar covalent bonds with hydrogen$
- D
  $Its high heat of vaporization (cooling effect)$
Why
$Oxygen pulls electrons more strongly than hydrogen, giving water a permanent dipole. The partial charges interact with charged regions of solutes, surrounding and dissolving them.$
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Sample 2difficulty 2/5
$Water rises in narrow xylem vessels in plants because of$
- A
  $Cohesion + adhesion (capillary action)$
  check_circle
- B
  $Osmosis from soil into the leaf tissues$
- C
  $Phototropism driven by auxin gradients$
- D
  $Active transport powered by ATP in xylem$
Why
$Water adheres to vessel walls and coheres to itself, creating a continuous column that can rise against gravity in narrow tubes.$
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Sample 3difficulty 2/5
$Which of the following is <strong> not </strong> a consequence of hydrogen bonding between water molecules?$
- A
  $Water being a non-polar solvent$
  check_circle
- B
  $Cohesion (water sticking to itself)$
- C
  $High specific heat capacity$
- D
  $Solid water (ice) being less dense than liquid water$
Why
$Hydrogen bonds make water polar, not non-polar; A, B, and C are all direct consequences of hydrogen bonding.$
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Sample 4difficulty 2/5
$Aquatic organisms benefit from water's high specific heat because$
- A
  $Water temperatures shift rapidly with sunlight, mirroring daily and seasonal air swings$
- B
  $Water provides a thermally stable environment, buffering daily and seasonal swings$
  check_circle
- C
  $Water reflects nearly all sunlight, preventing thermal energy from reaching submerged organisms$
- D
  $Water absorbs much less heat than the surrounding air, keeping aquatic habitats permanently cool$
Why
$Stable water temperatures protect aquatic life from rapid thermal shocks.$
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Sample 5difficulty 2/5
$Water's high specific heat means that$
- A
  $Small amounts of energy raise water's temperature dramatically$
- B
  $Water boils at unusually low temperatures, releasing heat to the surroundings$
- C
  $Large amounts of energy are needed to change water's temperature significantly$
  check_circle
- D
  $Water cannot store thermal energy because its hydrogen bonds break easily$
Why
$Hydrogen bonds absorb energy as they break/reform — temperature changes only after enough energy disrupts the H-bond network.$
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