Properties of Water Quiz

Which is the best example of water regulating an organism's body temperature?

A. A jogger sweating after a run.

Which is a characteristic of the polar water molecule?

A. A tetrahedral electron domain geometry with covalently bonded atoms.

Which statement is true about the electrons in each polar bond of a water molecule?

A. They are more attracted by the oxygen atom than by the hydrogen atom.

Which statement best describes how water's properties relate to its functions in a human's biological systems?

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.

Which best explains why blood and the cytoplasm of cells are mainly composed of liquid water?

B. Water is an important transport and reaction medium.

Water molecules are polar because the

B. Water molecule has a bent shape.

Which is a cause of polarity in water molecules?

C. High electronegativity difference between oxygen and hydrogen.

Which role of water is significant for most living things in a biological system?

C. It provides temperature regulation.

Which best explains why an iceberg floats?

C. Water expands and becomes less dense when it freezes.

Which example best shows that the chemistry of water is helpful to plants?

C. Water's polarity causes cohesion that pulls other water molecules up through a plant.

Which best explains the high surface tension of water?

D. Its hydrogen bonding interactions.

Water can resist a greater external force than ethanol can. Which statement best describes this difference?

D. Water has greater surface tension than ethanol.

Which best explains why water is able to "stick" to the side of glass?

C. Strong adhesive forces exist between glass and the water molecules.

Which statement would be true about a water molecule if it had a linear shape?

D. It would be a nonpolar molecule.