Which best explains why blood and the cytoplasm of cells are mainly composed of liquid water?
  • D. Water has greater surface tension than ethanol.
  • C. Water expands and becomes less dense when it freezes.
  • B. Water is an important transport and reaction medium.
  • A. Water absorbs a lot of energy from the skin due to its high specific heat.
Water can resist a greater external force than ethanol can. Which statement best describes this difference?
  • B. Water is an important transport and reaction medium.
  • C. Water expands and becomes less dense when it freezes.
  • A. Water absorbs a lot of energy from the skin due to its high specific heat.
  • D. Water has greater surface tension than ethanol.
Water molecules are polar because the
  • D. Water has greater surface tension than ethanol.
  • B. Water molecule has a bent shape.
  • C. It provides temperature regulation.
  • C. Water expands and becomes less dense when it freezes.
Which is a cause of polarity in water molecules?
  • A. A tetrahedral electron domain geometry with covalently bonded atoms.
  • C. High electronegativity difference between oxygen and hydrogen.
  • A. They are more attracted by the oxygen atom than by the hydrogen atom.
  • C. Water expands and becomes less dense when it freezes.
Which example best shows that the chemistry of water is helpful to plants?
  • A. They are more attracted by the oxygen atom than by the hydrogen atom.
  • C. Water's polarity causes cohesion that pulls other water molecules up through a plant.
  • A. Water can dissolve polar covalent compounds through dipole-dipole interactions.
  • A. Water absorbs a lot of energy from the skin due to its high specific heat.
Which statement best explains water's ability to dissolve covalent compounds?
  • A. Water can dissolve polar covalent compounds through dipole-dipole interactions.
  • A. They are more attracted by the oxygen atom than by the hydrogen atom.
  • C. Water's polarity causes cohesion that pulls other water molecules up through a plant.
  • A. Water absorbs a lot of energy from the skin due to its high specific heat.
Which statement would be true about a water molecule if it had a linear shape?
  • A. They are more attracted by the oxygen atom than by the hydrogen atom.
  • D. It would be a nonpolar molecule.
  • A. A jogger sweating after a run.
  • C. It provides temperature regulation.
Which best explains the high surface tension of water?
  • C. It provides temperature regulation.
  • D. It would be a nonpolar molecule.
  • C. Water expands and becomes less dense when it freezes.
  • D. Its hydrogen bonding interactions.
Which best explains why an iceberg floats?
  • D. Its hydrogen bonding interactions.
  • C. High electronegativity difference between oxygen and hydrogen.
  • C. Water expands and becomes less dense when it freezes.
  • B. Water is an important transport and reaction medium.
Which is a characteristic of the polar water molecule?
  • A. They are more attracted by the oxygen atom than by the hydrogen atom.
  • A. Water can dissolve polar covalent compounds through dipole-dipole interactions.
  • C. High electronegativity difference between oxygen and hydrogen.
  • A. A tetrahedral electron domain geometry with covalently bonded atoms.
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