15. Heavy metal ions bind to ___________ 18. Vinegar contains a water solution of and affect the _____, _____, _____ acetic acid. The most likely pH of systems. vinegar is A) carbohydrates; reproductive, A) 7 nervous, and muscle B) 3 B) DNA; reproductive, liver, and C) 13 kidney D) –1 C) proteins; respiratory, digestive, and reproductive 19. D) proteins; kidney, liver, and nervous Water at 30°C is saturated with oxygen. 16. A pond is contaminated with a chemical The temperature of the water is cooled to that is a base. Which ion will be present 5°C. How much more oxygen must be in higher concentration than in dissolved in 1000 grams of water to keep uncontaminated water? it saturated? A) SO42– A) 20 mg B) Ba2+ B) 12 mg C) H+ C) 6 mg D) OH– D) 1 mg 20. Water dissolves ionic compounds very well. Which statement best describes Use the graph in #19 for #17. how this happens? A) The (-) oxygen end of water is attracted to the cation while the (+) hydrogen end is attracted to the 17. If 8 milligrams of oxygen is dissolved in anion. 1000 grams of water at 12°C, the B) Nonpolar bonds are made between solution is water and ionic compounds. A) Unsaturated C) The nonpolar ends of water attract B) Supersaturated the polar ionic compounds. C) Saturated D) Ionic compounds break water molecules into hydrogen and hydroxide. 21. A solution that contains more solute than the indicated on the solubility graph for a certain temperature is A) diluted B) saturated C) unsaturated D) supersaturated
15. Heavy metal ions bind to ___________ and affect the _____, _____, _____ systems. A) carbohydrates; reproductive, nervous, and muscle B) DNA; reproductive, liver, and kidney C) proteins; respiratory, digestive, and reproductive D) proteins; kidney, liver, and nervous 16. A pond is contaminated with a chemical that is a base. Which ion will be present in higher concentration than in uncontaminated water? A) SO42– B) Ba2+ C) H+ D) OH– Use the graph in #19 for #17. 17. If 8 milligrams of oxygen is dissolved in 1000 grams of water at 12°C, the solution is A) Unsaturated B) Supersaturated C) Saturated 18. Vinegar contains a water solution of acetic acid. The most likely pH of vinegar is A) 7 B) 3 C) 13 D) –1 19. Water at 30°C is saturated with oxygen. The temperature of the water is cooled to 5°C. How much more oxygen must be dissolved in 1000 grams of water to keep it saturated? A) 20 mg B) 12 mg C) 6 mg D) 1 mg 20. Water dissolves ionic compounds very well. Which statement best describes how this happens? A) The (-) oxygen end of water is attracted to the cation while the (+) hydrogen end is attracted to the anion. B) Nonpolar bonds are made between water and ionic compounds. C) The nonpolar ends of water attract the polar ionic compounds. D) Ionic compounds break water molecules into hydrogen and hydroxide. 21. A solution that contains more solute than the indicated on the solubility graph for a certain temperature is A) diluted B) saturated C) unsaturated D) supersaturated
Water%20Section%20CD%20Test.docx