. The formula of chloric acid is HClO3. a) true b) false
2. Bases react with active metals to produce hydrogen gas. a) true b) false
3. Aqueous solutions of acids and bases conduct electricity. a) true b) false
4. The piece of lab equipment shown is used to dispense precise volumes. What is this piece of lab equipment called? a) pipette b) burette c) volumetric flask d) graduated cylinder
5. Which of the following solvents is often described as the universal solvent? a) hydrochloric acid b) water c) ethanol d) carbon tetrachloride
6. Solutions have a fixed composition. This means that the amount of solute in a fixed amount solvent is always the same. a) true b) false
7. 96.3 g of potassium iodate is used to prepare 300.0 mL of solution. What is the molar concentration of the solution? a) 5.7 mol/L b) 7.4 mol/L c) 1.5 mol/L d) 1.9 mol/L
8. Which factor does not affect the rate of dissolving? a) agitation b) amount of solvent c) particle size d) temperature
9. One thousand parts per billion equals one part per million. a) true b) false
10. A solution with a pH of 3.4 is three times more acidic than a solution with a pH of 6.4. a) true b) false.
11. Water and oil-based paint are said to be miscible. a) true b) false
12. Decreasing the size of bluestone (copper (II) sulphate pentahydrate) crystals by crushing them allows more bluestone to dissolve in the same amount of water. a) true b) false
13. Solid solutions of metals are called alloys. a) true b) false
14. Solubility is affected by: agitation, temperature, and pressure. a) true b) false
15. To prepare a 0.35 mol/L solution of calcium chloride, you add 19.4 g of CaCl2 to enough water to form 500 mL of solution. a) true b) false
16. A pH of 3.0 means that the concentration of hydrogen ions is 3.0 x 10-7 mol/L. a) true b) false
17. When a solution is made, there is no chemical reaction. The solution can be separated into its components mechanically (evaporation). a) true b) false
18. When an acid solution is diluted, the pH of the solution increases. a) true b) false
19. Which statement about water is false? a) It is made up of a polar molecule. b) It dissolves most polar compounds. c) It dissolves most non-polar compounds. d) It dissolves most ionic compounds.
20. A polar solvent cannot dissolve ionic and polar solutes. a) true b) false
21. Concentration is the amount of solute per quantity of solvent. a) true b) false