Worksheet: The Unique Properties of Water and How it Impacts Our Lives

Instructions: Answer the following questions based on your knowledge about the unique properties of water and how it impacts our lives.

1. What is the chemical formula for water? a) H2O b) CO2 c) O2 d) HCl

2. Water is the only substance on Earth that naturally exists in three different states. What are these states called? a) Solid, liquid, and gas b) Solid, liquid, and plasma c) Solid, liquid, and powder d) Solid, liquid, and vapor

3. What is the process called when water changes from a liquid to a gas? a) Condensation b) Evaporation c) Freezing d) Melting

4. Water has a high specific heat capacity. What does this mean? a) Water can absorb a lot of heat without changing its temperature significantly. b) Water heats up quickly and cools down slowly. c) Water can only absorb a small amount of heat before boiling. d) Water cannot conduct heat.

5. How does water’s high specific heat capacity affect our climate? a) It causes extreme temperature fluctuations. b) It helps regulate temperature, preventing drastic changes in weather. c) It makes the climate hotter. d) It has no impact on climate.

6. What is the process called when water changes from a gas to a liquid? a) Condensation b) Evaporation c) Freezing d) Melting

7. Water molecules are polar. What does this mean? a) Water molecules have a positive charge on one end and a negative charge on the other. b) Water molecules have a neutral charge. c) Water molecules have a negative charge on both ends. d) Water molecules have a positive charge on both ends.

8. How does water’s polarity allow it to dissolve many substances? a) Water’s polarity repels other substances, preventing them from dissolving. b) Water’s polarity attracts other substances, allowing them to dissolve. c) Water’s polarity has no effect on dissolving substances. d) Water’s polarity only allows it to dissolve gases, not solids.

9. What is the process called when water changes from a liquid to a solid? a) Condensation b) Evaporation c) Freezing d) Melting

10. How does water’s ability to expand when it freezes impact our lives? a) It causes water to become denser, leading to the sinking of icebergs. b) It causes water to contract, leading to the formation of ice crystals. c) It causes water to expand, leading to the cracking of pipes and containers. d) It has no impact on our lives.

Answer Key: 1. a) H2O 2. a) Solid, liquid, and gas 3. b) Evaporation 4. a) Water can absorb a lot of heat without changing its temperature significantly. 5. b) It helps regulate temperature, preventing drastic changes in weather. 6. a) Condensation 7. a) Water molecules have a positive charge on one end and a negative charge on the other. 8. b) Water’s polarity attracts other substances, allowing them to dissolve. 9. c) Freezing 10. c) It causes water to expand, leading to the cracking of pipes and containers.