Question 1

The image above shows two water molecules. The dashed line labeled 'hydrogen bond' represents which of the following interactions?

Accepted Answer

An intermolecular attraction between the partially positive hydrogen of one water molecule and the partially negative oxygen of another.

Question 2

Which property of water is most directly explained by the presence of hydrogen bonds as shown in the image?

Accepted Answer

Water's high surface tension.

Question 3

If the hydrogen bonds between water molecules were significantly weaker, which of the following would most likely occur?

Accepted Answer

Water would evaporate more easily at room temperature.

Question 4

Which of the following best describes the difference between the hydrogen bond shown in the image and the covalent bonds within a water molecule?

Accepted Answer

The hydrogen bond is an intermolecular force, while the covalent bonds are intramolecular.

Unit 6: The Molecules of Life – Study Guide

Study Guide - Practice Questions