1. The ratio of the amount of solute in each amount of solvent is known as . A. concentration C. dissolving B. dilution D. saturation

2. What happens when you add more solvent to a given amount of solute? A. The solution will become diluted. B. The solution will become concentrated. C. The solution will become more saturated. D. The solution will become supersaturated.

3. Which of the following samples can be considered as a concentrated solution of Povidone Iodine, an antiseptic for minor wounds? A. 3 drops of Povidone Iodine dissolved in 100 ml of water. B. 5 drops of Povidone Iodine dissolved in 100 ml of water. C. 10 drops of Povidone Iodine dissolved in 100 ml of water. D. 50 drops of Povidone Iodine dissolved in 100 ml of water.

4. If the solution has a greater amount of solute as compared to the given amount of solvent, it can be described as . A. concentrated C. saturated B. dilute D. unsaturated

5. A bottle of mouthwash must be diluted using this ratio of 1 cup of the solution: 150 ml of solvent. What should you do to dilute the mouthwash? A. Mix 1cup of mouthwash solution in 1 cup of water. B. Mix 150 ml of mouthwash solution in 1 cup of water. C. Mix 1 cup of mouthwash solution in 150 ml of water. D. Mix 150 ml of water in 150 ml of mouthwash solution. 6. Some of the products that we use at home need to be diluted before we should use them. A product label indicates that 1 cup of the bleach solution should be added to 1 liter of water. What will happen when you mix an additional 500 ml of water to the bleach solution? A. It will become diluted. B. It will become saturated. C. It will become concentrated. D. It will become supersaturated.

7. What is the ratio of Ethyl alcohol and water in a 100 ml solution of 70 % Ethyl alcohol?
A. 30% Ethyl alcohol:70% water C.50% water: 50% Ethyl alcohol
B. 70% Ethyl alcohol:30% water D.80% Ethyl alcohol: 20%water

8. What is the percentage by volume of 5 mL of Sodium hypochlorite, an active ingredient in bleach, dissolved in 250 ml solution?
A. 0.02% B. 1% C. 1.5 % D. 2 %

9. Which is the correct equation in computing the percent by mass of solute in a solution?
A. % Mass of solute = (mass of solute + mass of solution) x 100 %
B. % Mass of solute = mass of solute
mass of solution
x 100 %
C. % Mass of solute = mass of solution x 100 %
mass of solute
D. % Mass of solute = mass of solute
mass of solvent
x 100 %

10. John dissolves 50 grams of sodium chloride (NaCl) in 300 mL of water (1 mL of water weighs 1 g). What is the mass percent of sodium chloride in the solution?
A. 0.17 % B. 6 % C. 14.29 % D. 16.67 %

11. Find the percent by mass if 100 grams of sugar is dissolved in a solution whose total mass is 450 grams.
A. 0.2 % B. 4.5 % C. 22.2 % D.45 %

12. A 100-gram sample of sodium chloride aqueous solution has 5% solute. What is the mass of water?
A. 5 g C. 100 g
B. 95 g D. Cannot be determined

13. What is the percent by mass of sodium hydrogen carbonate that has 25 grams of solute in 500 mL of water?
A. 4.76 % B. 20 % C. 25 % D. 70.43 %

14. If you have 250 g of bleach (NaOCl) solution and the percent by mass of bleach is 3%, what is the mass of NaOCl?
A. 3 g B. 7.5 g C. 83.33 g D. 250 g

15. How many grams of solvent is there in question number 14?
A. 166.67 g B. 242.5 g C. 247 g D. 250 g​