3. A:B: The soluteThe solvent #1 A solution was made mixing 2 g of ice tea mix and water. What part of the solution is the water? C:D: The mixtureThe mass

4. B.The solvent

5. A:B: steelsolder #2 Which of the following is a pure substance? C:D: Sodium chloridemilk

6. C. Sodium Chloride

7. A:B: 15 grams5 grams #3 A solution is made of 5 g of salt and 10 mL of water. What is the MASS of the solution? C:D: 10 gramsNot enough information

8. A. 15 grams

9. A:B: 100 grams 4 grams #4 Mass of jar at start 52 g Mass of jar at end 48 g How much salt was added to a test tube of water in this lab when trying to make a solution? C:D: 2.2 grams 9 grams

10. B. 4 grams

11. A:B: The solution would be transparent It would be thick #5 How would the students in the previous lab know that the solution was saturated? C:D: Add more salt and it would dissolve They could see salt at the bottom of the tube

12. D. They could see salt at the bottom of the tube.

13. A:B: Heat itFreeze it and mass it #6 How do we find the solubility of a certain substance in a certain solvent? C:D: See how much dissolves in the solvent before it is saturated. Filter it and measure the filtrate.

14. C.See how much dissolves in the solvent before it is saturated. (This would be approximate.)

15. A:B: The ink is insoluble in water. The process was not done correctly. #7 On a chromatogram, a dot of ink did not change at all when placed in water. What can you conclude? C:D: It is made of only one Substance. The dot was too large.

16. A. The ink is insoluble in water.

17. A:B: Two did not react All markers have at least one of the same dyes in them. #8 A dot of blue, orange, purple and red marker were placed on a chromatogram. Although the shapes of the ink were different, how could the forensic scientist know 2 of the markers contained some of the same EXACT dye. C:D: Two disappeared from the paper completely. One small part of the chromatogram of 2 inks looked the same.

18. D.One small part of the 2 chromatograms looked the same.

19. A:B: The temperature falls, more water freezes. Temperature rises, ice melts. #9 If I add salt to ice, which of the following would probably happen? C:D: Temperature falls, ice melts. Temperature stays the same, ice melts.

20. C. Temperature falls and ice melts.

21. A:B: 101 F100 C #10 If salt is added to boiling water, which of the following is probably the temperature of the boiling solution? C:D: 200 C104 C

22. D. 104 C

23. A:B: Water evaporatesWater dissolves #11 Which of the following occurs when salt water is boiled? C:D: Water driesSalt disappears

24. A.Water evaporates

25. A:B: Obvious mixturesAll solutes #12 Which of the following will pass through a filter leaving little or nothing behind. C:D: Cloudy liquidsSolutions

26. D. Solutions

27. A:B: FiltrateResidue #13 Zinc oxide and water when filtered, left behind a white powder in the filter and just the water in the test tube. What is the white powder in the filter called? C:D: SolutionSolute

28. B. Residue

29. A:B: It looks like white sugar. It is a white crystalline solid that is soluble in water and non- magnetic #14 Which of the following is a good observation of the properties of a substance? C:D: It is crystals It looks like either sugar or salt because it is white and solid.

30. B. It is a white crystalline solid that is soluble in water and non- magnetic

31. A:B: Melting/freezing pointDensity #15 Which of the following is NOT a Characteristic property of matter? C:D: MassSolubility

32. C. MASS!!!!

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