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Chemistry Test 7

Chapters 25-29; Lab 13.14

1. When water ionizes, it creates H+ ions which are _______ and OH– ions which are_____. 1.acidic, basic
2. Evaporation of a liquid has a________effect on the surface from which it evaporates. 2.cooling
3. A solution having a pH of 6 is ________. 3.acidic
4. The unique nature of water keeps the temperature of the earth’s surface livable. 4.true
5. The unique nature of water keeps lakes from freezing solid in the winter months. 5.true
6. Blood and lymph are made of mostly protein. 6.false
7. Water serves as a medium in which food and nutrient substances dissolve to feed living cells. 7.true
8. Acid/base reactions produce water and a salt. 8.true
9. Soft drinks contain acid. 9.true
10. Milk of magnesia works by neutralizing stomach acid. 10.true
11. The following are methods for separating suspensions: 11.filtration, settling, centrifugation
12. Which of the following reactions shows the correct, complete ionization of sodium hydroxide: 12.NaOH ---> Na+ + OH-
13. The following reactions shows the correct way that hydrochloric acid normally reacts with sodium hydroxide: 13.HCl + NaOH ---> NaCl + H2O
Created by: jeni25