Question 1

Which type of bond is responsible for the unique properties of water, such as cohesion and high specific heat?

Accepted Answer

Hydrogen bonds

Question 2

Why does ice float on liquid water?

Accepted Answer

Stable hydrogen bonds keep water molecules of ice farther apart than water molecules of liquid water.

Question 3

Which emergent property of water is most directly responsible for the ability of some insects to walk on water?

Accepted Answer

Cohesion and surface tension

Question 4

A lake remains liquid under a layer of ice during winter. Which property of water explains this phenomenon?

Accepted Answer

Water's density as a solid is lower than as a liquid

Question 5

Which of the following best describes the process of evaporation?

Accepted Answer

The conversion of a liquid into a vapor.

Question 6

What is the main reason water has a high specific heat compared to other substances?

Accepted Answer

Water forms strong hydrogen bonds that require more energy to break.

Question 7

Which of the following is NOT an emergent property of water?

Accepted Answer

High density of solid compared to liquid water

Question 8

A solution in which water is the solvent is called a(n) ______ solution.

Accepted Answer

Aqueous

Question 9

Which of the following effects can occur because of the high surface tension of water?

Accepted Answer

A spider can walk across the surface of a small pond.

Question 10

What is the charge of the solute molecule in the image below based on the polarity of water?

Accepted Answer

Negatively charged

Question 11

Which statement best explains why water is called the 'universal solvent'?

Accepted Answer

Water can dissolve a wide variety of substances due to its polarity.

Question 12

Which of the following best describes the molecular structure of water?

Accepted Answer

A small, polar molecule with two hydrogen atoms and one oxygen atom

Question 13

Which property of water allows it to move upward through the stem of a plant against gravity?

Accepted Answer

Cohesion and adhesion

Question 14

What is the main reason that sweating cools the human body?

Accepted Answer

Evaporation of water absorbs heat from the skin due to water's high heat of vaporization.

Question 15

Which of the following statements about the density of water is correct?

Accepted Answer

Solid ice is less dense than liquid water.

Question 16

Which of the following best explains why water has a high heat of vaporization?

Accepted Answer

Water molecules are held together by strong hydrogen bonds that require a lot of energy to break.

Question 17

Which of the following is a direct result of water's high specific heat?

Accepted Answer

Oceans help moderate Earth's climate by resisting temperature changes.

Question 18

Which of the following best describes the interaction between water molecules in liquid water?

Accepted Answer

Hydrogen bonds are constantly breaking and reforming.

Question 19

Which of the following is the correct formula for calculating the specific heat of a substance?

Accepted Answer

$$q = m \cdot c \cdot \Delta T$$

Question 20

Which of the following best explains why salt (NaCl) dissolves easily in water?

Accepted Answer

The positive and negative ends of water molecules surround and separate the Na+ and Cl- ions.

Properties of Water: Structure, Bonding, and Chemical Behavior

Study Guide - Practice Questions