Exploring the Unique Properties of Water

Water is vital for life on Earth, existing in all three states naturally. It has unique properties like high specific heat, cohesion, and adhesion, making it essential for temperature regulation and plant life. Water is a universal solvent, crucial for transporting nutrients. Humans depend on it for various needs but must conserve and protect it from pollution.

What percentage of the Earth's surface is covered by water?

• One-quarter

• Three-quarters

• Half

• Two-thirds

Which of the following is NOT a state in which water can naturally be found?

• Liquid

• Gas

• Plasma

• Solid

Why is ice able to float on water?

• Because it is colorless

• Because it is less dense than liquid water

• Because it is more dense than liquid water

• Because it has a different chemical composition

What is the pH level of pure water?

• Acidic

• Basic

• Varies

• Neutral

Why is water referred to as the 'universal solvent'?

• Because it can dissolve many substances

• Because it is found everywhere

• Because it is colorless

• Because it has a high specific heat

What property of water allows it to absorb a lot of heat before changing temperature?

• High density

• High specific heat

• Low specific heat

• Low density

What causes water molecules to attract each other?

• Surface tension

• Cohesion

• Adhesion

• Capillary action

What is the result of cohesion in water molecules?

• Water molecules evaporate quickly

• Water molecules stick to each other

• Water molecules stick to other surfaces

• Water molecules repel each other

What phenomenon allows water to move upward through narrow tubes against gravity?

• Surface tension

• Cohesion

• Adhesion

• Capillary action

Why is it important to conserve and keep water pure?

• Because it is essential for life and various human activities

• Because it is colorless

• Because it has a high specific heat

• Because it can dissolve many substances