Water sample analysis: dissolved solids

12 questions

1. Which of the following describes a solution?
2. What is the main purpose of the evaporation process in water sample analysis?
3. What is the term for a substance that dissolves in a solvent to form a solution?
4. Which apparatus is used to accurately measure the volume of a liquid?
5. Why is it important for solute particles to spread evenly throughout the solvent in a solution?
6. What happens to the solute particles during the dissolution process?
7. What process is used to separate dissolved solids from a liquid?
8. How can you calculate the concentration of dissolved solids in a water sample?
9. Why is it important to compare data from different water samples?
10. What should you do after heating the water sample in the evaporation process?
11. A 30 cm³ water sample contained 0.20 g of dissolved solids. What mass of dissolved solids is in a 5 cm³ sample?
12. Students heated 10 cm³ of a water sample in a 95.56 g evaporation dish, until dry. Which sample is pure water?

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