Water Quality Module Lesson 1

Water is made up of tiny particles called molecules, and its special name is?

• N₂O

• H₂O

• HO₂

• K₂O

How many hydrogen atoms are bonded to a single oxygen atom in the water molecule?

• 1

• 2

• 3

• 4

What properties of water allows it to dissolve a wide range of substances, making it an excellent solvent for many biological and chemical processes?

• Polarity

• Cohesion

• Density

• Heat of evaporation

Water's ability to stick to other surfaces is referred to as

• Polarity

• Adhesion

• Cohesion

• Evaporation

The property of water that enables it to resist temperature changes and regulate the climate of the Earth is called

• Polarity

• Adhesion

• Heat of evaporation

• High heat capacity

When water changes from a liquid to a gas, it requires a significant amount of heat to break its hydrogen bonds. This heat is known as

• High heat capacity

• Heat of evaporation

Water's tendency to stick to itself due to hydrogen bonding is called

• Cohesion

• Adhesion

In the solid state, why does ice float on water?

• Ice and water have the same density in the solid state.

• Ice is less dense than water in its solid state, allowing it to float.

• Ice is denser than water in its solid state.

What does the term "turbidity" refer to in the context of water quality?

• The temperature of the water

• The taste of the water

• The color of the water

• The quantity of suspended particles in the water

What is the primary driving force behind the water cycle?

• Wind

• Earth's magnetic field

• Solar radiation