Question 1

Which type of bond is primarily responsible for the cohesion between water molecules?

Accepted Answer

Hydrogen bonds

Question 2

Which emergent property of water allows ice to float on liquid water, supporting aquatic life in cold climates?

Accepted Answer

Density of solid is lower than liquid

Question 3

What is the main reason water has a high specific heat capacity?

Accepted Answer

The abundance of hydrogen bonds that absorb heat when broken

Question 4

Which of the following best explains why water is an excellent solvent for ionic compounds like NaCl?

Accepted Answer

Water molecules are polar and can form hydration shells around ions

Question 5

A spider can walk on water due to which property of water?

Accepted Answer

High surface tension

Question 6

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

Accepted Answer

Liquid water is denser than ice because its molecules are constantly breaking and reforming hydrogen bonds

Question 7

Which property of water is most important for maintaining stable temperatures in lakes and oceans?

Accepted Answer

High specific heat

Question 8

What is the correct definition of heat of vaporization?

Accepted Answer

The amount of heat required to convert 1 gram of a liquid to a gaseous state

Question 9

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

Accepted Answer

High density of solid compared to liquid

Question 10

Why does sweating help cool the human body?

Accepted Answer

Evaporation of sweat removes heat from the body due to water's high heat of vaporization

Question 11

Which of the following best describes the polarity of a water molecule?

Accepted Answer

The oxygen atom is slightly negative and the hydrogen atoms are slightly positive

Question 12

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 13

Which of the following best explains why ice floats on water?

Accepted Answer

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

Question 14

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

Accepted Answer

A lake helps to keep nearby air temperature more stable

Question 15

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

Accepted Answer

Negatively charged

Question 16

Which of the following best describes the process of cohesion in water?

Accepted Answer

Water molecules stick to each other due to hydrogen bonding

Question 17

Which property of water is most important for the transport of water from roots to leaves in plants?

Accepted Answer

Cohesion and adhesion

Question 18

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

Accepted Answer

Aqueous

Question 19

Which of the following statements is correct regarding the heat of vaporization of water?

Accepted Answer

Water has a high heat of vaporization due to the abundance of hydrogen bonds

Question 20

Which of the following best describes the role of hydrogen bonds in the properties of water?

Accepted Answer

They are responsible for water's high specific heat and surface tension

Properties of Water: Structure, Bonding, and Biological Importance

Study Guide - Practice Questions