Chemistry Chapter 2.3 Review Questions

Questions and Answers

Water is neither hydrophilic nor hydrophobic, because these terms only define the interaction of other molecules with water molecules.

False

Which of the following statements is TRUE regarding a polar molecule?

A polar molecule will dissolve in water. (correct)

A polar molecule is hydrophilic. (correct)

A polar molecule is hydrophilic and it will dissolve in water. (correct)

A polar molecule is hydrophobic.

A polar molecule will not dissolve in water.

Water is able to dissolve many compounds as a result of which of the following?

The fact that the hydrogen atoms in water molecules have a slight negative charge.

The fact that water molecules are polar. (correct)

The fact that water molecules are nonpolar.

The fact that most nonwater molecules are hydrophobic.

The fact that water molecules are polar, and that the hydrogen atoms in water molecules have a slight negative charge.

The unique properties of water are due to the _ of water molecules and the ability of water to form _ with other water molecules and with other polar molecules.

<p>polarity; hydrogen bonds</p> Signup and view all the answers

Study Notes

Properties of Water

Water is characterized as neither hydrophilic nor hydrophobic because these terms apply to how other substances interact with water.
The statement that defines water's interaction with other molecules varies based on those specific substances.

Polar Molecules

A polar molecule is inherently hydrophilic, meaning it has an affinity for water and will dissolve in it.
Identifying polar molecules is essential as they interact well with water, leading to various biochemical reactions.

Solubility of Compounds

Water's ability to dissolve many compounds originates from its polar nature, which allows it to interact effectively with various molecules.
The polar aspect of water makes it a solvent for hydrophilic substances, enhancing its role in numerous biological processes.

Unique Properties of Water

The unique properties exhibited by water arise from the polarity of water molecules.
Water molecules form hydrogen bonds, which are crucial for the stability and functionality of water as a solvent.

Description

Test your understanding of key concepts in chemistry with these review questions from Chapter 2.3. This quiz covers polar molecules and their interactions with water, helping you reinforce important definitions and truths related to chemical properties.