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

Question 4

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

Accepted Answer

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

Question 5

Which of the following best describes the process of evaporation?

Accepted Answer

The conversion of a liquid into a vapor.

Question 6

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

Accepted Answer

Aqueous

Question 7

Which property of water allows it to moderate Earth's climate by absorbing and releasing large amounts of heat with only slight temperature changes?

Accepted Answer

High specific heat

Question 8

What is the charge on the oxygen atom in a water molecule due to its polarity?

Accepted Answer

Negative

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

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 11

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

Accepted Answer

High density of solid compared to liquid water

Question 12

Which of the following best describes the structure of ice compared to liquid water?

Accepted Answer

Ice has a lattice structure with stable hydrogen bonds, making it less dense than liquid water.

Question 13

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

Accepted Answer

Cohesion

Question 14

What is the main reason that water can dissolve ionic compounds like NaCl?

Accepted Answer

Water's polarity allows it to surround and separate the positive and negative ions.

Question 15

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

Accepted Answer

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

Question 16

Which of the following best explains why sweating cools the body?

Accepted Answer

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

Question 17

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

Accepted Answer

A lake helps to keep its temperature more stable than the surrounding environment.

Question 18

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

Accepted Answer

The H atoms on molecules of H2O hydrogen bond to O atoms on adjacent molecules of H2O.

Question 19

Which of the following is the correct formula for calculating the specific heat ($$c) of a $$substance?

Accepted Answer

$$c = \frac{q}{m \Delta T}$$

Question 20

A sample of water absorbs $$4200\ \mathrm{J} of $$heat, raising the temperature of $$100\ \mathrm{g} of $$water by $$10^{\circ}$$\mathrm{C}$$. What is the specific heat of water in $$\mathrm{J/g}^{\circ}\mathrm{C}$$?

Accepted Answer

$$4.2\ \mathrm{J/g}^{\circ}\mathrm{C}$$

Properties of Water: Structure, Bonding, and Emergent Behaviors

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