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Water and Its Properties Quiz

#1

What is the chemical formula for water?

H2O
Explanation

Water is composed of two hydrogen atoms and one oxygen atom.

#2

Which of the following is NOT a property of water?

Low heat capacity
Explanation

Water actually has a high heat capacity.

#3

Which of the following is a property of water known as the 'universal solvent'?

It dissolves ionic substances
Explanation

Water's polarity allows it to dissolve many different kinds of substances, making it known as the universal solvent.

#4

What is the freezing point of water in Fahrenheit?

32°F
Explanation

Water freezes at 32°F under standard atmospheric pressure.

#5

What is the term for the process by which water changes from a liquid to a gas?

Evaporation
Explanation

Evaporation is the phase transition of water from a liquid to a gas.

#6

What is the boiling point of water in Celsius?

100°C
Explanation

Water boils at 100°C under standard atmospheric pressure.

#7

What is the phenomenon called when water molecules stick to each other?

Cohesion
Explanation

Cohesion is the intermolecular attraction between water molecules.

#8

Which property of water allows it to moderate Earth's temperature?

High heat capacity
Explanation

Water's high heat capacity enables it to absorb and release large amounts of heat with little temperature change.

#9

What is the term for the process by which plants release water vapor into the atmosphere?

Transpiration
Explanation

Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems, and flowers.

#10

Which of the following factors does NOT affect the density of water?

Volume
Explanation

Volume directly affects the density of water.

#11

What is the term for the maximum amount of water vapor that can be present in the air at a given temperature?

Absolute humidity
Explanation

Absolute humidity is the maximum water vapor content of the air at a specific temperature.

#12

What property of water allows it to form hydrogen bonds with other substances?

Polarity
Explanation

Water's polarity enables it to form hydrogen bonds with other polar molecules or ions.

#13

Which of the following is a property of water that allows it to exhibit capillary action?

High adhesion
Explanation

Water's high adhesion allows it to climb up narrow tubes, a phenomenon known as capillary action.

#14

What is the term for the process by which water vapor changes directly into ice without passing through the liquid phase?

Sublimation
Explanation

Sublimation is the transition of a substance directly from the solid phase to the gas phase without passing through the intermediate liquid phase.

#15

What is the term for the process by which water moves upward through small tubes against the force of gravity?

Capillarity
Explanation

Capillarity is the ability of a liquid to flow in narrow spaces without the assistance of external forces.

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