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Questions and Answers
Which physical state of water is represented by the symbol 'H2O' in the text?
Which physical state of water is represented by the symbol 'H2O' in the text?
- Solid state
- Liquid state (correct)
- Vapour state
- All of the above
What is the process called when water changes from a solid state to a liquid state?
What is the process called when water changes from a solid state to a liquid state?
- Condensation
- Freezing
- Melting (correct)
- Evaporation
At what temperature does water boil?
At what temperature does water boil?
- The text does not provide this information.
- 0°C
- 4°C
- 100°C (correct)
What is the energy change when water changes from a liquid state to a gas state?
What is the energy change when water changes from a liquid state to a gas state?
What is the process called when water changes from a gas state to a liquid state?
What is the process called when water changes from a gas state to a liquid state?
What are the two factors that affect the rate of evaporation of water?
What are the two factors that affect the rate of evaporation of water?
What happens to water vapor when it cools down?
What happens to water vapor when it cools down?
How are clouds transported to other places?
How are clouds transported to other places?
What factors affect the rate of dissolving of a solute in water?
What factors affect the rate of dissolving of a solute in water?
What is the solvent in a solution?
What is the solvent in a solution?
Which of the following statements about solubility is true?
Which of the following statements about solubility is true?
What happens to the solubility of a substance in water as the temperature increases?
What happens to the solubility of a substance in water as the temperature increases?
Why is it important to remove impurities and microorganisms from natural water before consumption?
Why is it important to remove impurities and microorganisms from natural water before consumption?
Which of the following methods can be used to remove insoluble impurities from water?
Which of the following methods can be used to remove insoluble impurities from water?
What can chlorine, ozone, and ultraviolet light be used for in water treatment?
What can chlorine, ozone, and ultraviolet light be used for in water treatment?
What is the purpose of adding fluoride to drinking water?
What is the purpose of adding fluoride to drinking water?
Which of the following is part of the water treatment process in Hong Kong?
Which of the following is part of the water treatment process in Hong Kong?
What are the potential health risks associated with eating seafood from waters polluted with harmful microorganisms?
What are the potential health risks associated with eating seafood from waters polluted with harmful microorganisms?
What can happen during a red tide?
What can happen during a red tide?
What are the potential health risks associated with eating contaminated seafood?
What are the potential health risks associated with eating contaminated seafood?
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