SPS6: Solutions, Acids, Bases (SPS6acidsbasessolution)
Name:_____________________________________________
Date:________________________
1.The more solute that can be dissolved in a solvent, the greater the solubility of the
A. solute.
B. solvent.
C. solution.
D. saturation.
2. What does it mean when a mixture is said to have reached saturation at a given temperature and pressure?
A. A dilute solution has been formed.
B. There is more solute than solvent in the mixture.
C. As much solute as possible is dissolved in the solvent.
D. The solute and solvent have formed a heterogeneous mixture.
3. Terry went for a walk several hours after a thunderstorm. He noticed a puddle of water near the path and
stirred it with a stick. The resulting muddy puddle was an example of which of the following?
A. phase change
B. universal solvent
C. homogeneous mixture
D. heterogeneous mixture
4. Jennifer has a flask of an unknown liquid. On close examination, she notices tiny particles dispersed
throughout the liquid. Which of the following is true?
A. It is a solution. B. It is a pure substance. C. It is a homogeneous mixture. D. It is a heterogeneous mixture.
Vinegar is a liquid solution containing acetic acid and water. It could be accurately classified as which of the
following?
5.
A. a colloid
B. a compound
C. a homogeneous mixture
D. a heterogeneous mixture
6. Which process is represented by the following description: "sugar is added to water and a sweet liquid
results after stirring"?
A. melting
B. dissolving
C. evaporation
D. oxidation
7. The water from hot springs near the Ebeko volcano in the Pacific Ocean has a very low pH.
A low pH indicates which of the following about the water?
A. It has no detectable H_ or OH_ ions.
C. It has high concentrations of H_ ions.
B. It has equal concentrations of H_ and OH_ ions.
D. It has equal numbers of positive and negative ions.
.
8. The table below shows the pH values of samples of substances.
According to the table, which of these substances is basic?
A. rainwater
B. drain cleaner
C. distilled water
D. soda water
9. Many laboratory preparations of solutions call for stirring the solvent while adding the solute. Which of the
following is always an effect of this procedure?
A. It decreases the reactivity of the solute.
B. It decreases the solubility of the solute.
C. It brings the solute and solvent rapidly into contact. D. It produces a double displacement reaction. .
10. A student pours mineral salts into a bottle of cold water. Which of the following best explains why shaking
the bottle will affect the dissolving rate of the salt?
A. Shaking exposes the salts to the solvent more quickly.
B. Shaking helps more water to evaporate.
C. Shaking causes more ions to precipitate out of solution.
D. Shaking equalizes the water temperature.
11. The diagram below represents a sodium ion surrounded by several water molecules.
This diagram can be used to represent which of the following?
A. how sodium ions dissolve in water
B. how sodium is neutralized by water
C. how sodium metal makes bubbles in water
D. how sodium ions precipitate out as a solid in aqueous solution
12. Concrete is composed of Portland cement, rocks, sand, and water. Which of the following best describes
concrete?
A. an element
B. a compound
C. a homogenous mixture
D. a heterogeneous mixture
.
13. Which of the following substances has the highest concentration of hydrogen ions in solution?
A. bleach – pH 13
B. water – pH 7
C. tomato juice – pH 4
D. vinegar – pH 3
.
14. Three 10 g samples of sugar are represented below.
Sample A dissolves in water more slowly than sample B. Sample B
dissolves more slowly than sample C. Which of the following best
explains why sample A dissolves most slowly?
A. It has the most volume.
C. It has the largest number of sugar molecules.
.
B. It has the smallest surface area.
D. It has the fewest bonds between sugar molecules.
15. During a physical science activity you are required
to make a saturated solution of sodium sulfate
(Na2SO4) in water. At what temperature are you most
likely to make such a solution?
A. 0oC
B. 40oC
C. 125oC
D. 200oC
16. During science lab, several students discovered that iodine dissolved readily in ethanol. In this case, the
ethanol would be classified as the
A. alloy.
B. solute.
C. solution.
D. solvent.
17. You are given 100 ml of 20oC water at standard atmospheric pressure containing 0.16 grams of carbon
dioxide gas. What should you do to INCREASE the amount of carbon dioxide dissolved in this solution?
A. Decrease the temperature.
B. Increase the temperature. C. Decrease the pressure.
D. Stir the solution.
18. When making a solution of sugar and water, you begin with a 500 ml beaker, 10 grams of sugar, and 400 ml
of distilled water. Which procedure will allow you to dissolve the MOST sugar in the LEAST amount of time?
A. Pour the sugar and water in the beaker. B. Pour the sugar and water in the beaker and stir.
C. Pour the sugar and water in the beaker, stir, and heat over a hot plate.
D. Pour the sugar and water in the beaker, stir, and place the beaker in an ice bath.
19. Which of these solutes, when dissolved in water, will ionize and form a solution that conducts electricity?
A. O2
B. CH4
C. CaCl2
D. C6H12O6
20. Certain substances, when dissolved in water, produce ions in solution. Such substances are called
A. electrolytes.
B. elements.
C. molecules.
D. nonpolar.
21. Ammonia is a common base used in household cleaners. Which is a characteristic of a base?
A. pH < 7
B. pH = 7
C. produces OH- in solution
D. turns blue litmus red
22. During science lab, students were asked to test a variety of common household substances and classify them
as: acid, base, or neutral. Tests on shampoo produced the following results.
felt slippery
These results indicate
pH 8.5
turned red litmus blue
A. shampoo is an acid.
C. shampoo is neutral.
B. shampoo is a base.
D. there is insufficient information to classify shampoo.
23. White gold is actually an alloy of three metals:
85% gold
10% nickel
5% zinc
In this case, the solvent would be
A. gold.
B. nickel.
C. water.
D. zinc.
24. Soda water is a solution of carbon dioxide in water. This solution is composed of a —
A. gaseous solute in a gaseous solvent
C. gaseous solute in a liquid solvent
B. liquid solute in a liquid solvent
D. liquid solute in a gaseous solvent
25. Which of the following aqueous solutions will cause litmus paper to
turn red?
A. NaOH
B. NaCl
C. HCl
D. H2O
26. What is represented by the pH of a solution?
A. Partial pressure of hydrogen ions in the solution
B. Electronegativity of dissociated hydrogen ions in the solution
C. Concentration of hydrogen ions in the solution
D. Temperature of hydrogen ions in the solution
27. Which pair of solutions would be acidic if mixed in equal
quantities?
A. A and B
B. B and C
C. B and D
D. C and D
28. Which of the following is a mixture?
A. Carbon
B. Glucose
C. Distilled water
D. Air
Answer Key
1. A) solute.
2. C) As much solute as possible is dissolved in the solvent.
3. D) heterogeneous mixture
4. D) It is a heterogeneous mixture.
5. C) a homogeneous mixture
6. B) dissolving
7. C) It has high concentrations of H_ ions.
8. B) drain cleaner
9. C) It brings the solute and solvent rapidly into contact.
10. A) Shaking exposes the salts to the solvent more quickly.
11. A) how sodium ions dissolve in water
12. D) a heterogeneous mixture
13. D) vinegar – pH 3
14. B) It has the smallest surface area.
15. B) 40oC
16. D) solvent.
17. A) Decrease the temperature.
18. C) Pour the sugar and water in the beaker, stir, and heat
over a hot plate.
19. C) CaCl2
20. A) electrolytes.
21. C) produces OH- in solution
22. B) shampoo is a base.
23. A) gold.
24. C) gaseous solute in a liquid solvent
25. C) HCl
26. C) Concentration of hydrogen ions in the solution
27. A) A and B
28. D) Air