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Elements, Compounds & Mixtures Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

Page 1

Question 1 1. Which of these properties, is NOT a colligative one?

Question 2 2. If I used 0.3 L of a stock solution to make 5 L of a 2 M diluted solution, what was the original molarity of the stock solution?

Question 3 3. Which of the following is an example of a colligative property?

Question 4 4. What is the freezing point of a solution made by dissolving 100.0 g of sucrose (C12H22O11) into 950 g of water? Kf of water = 1.86 C/m and the molar mass of sucrose = 342.2 g/mol

Question 5 5. How much of a 16 M stock solution must you add to make 4 L of a 1 M diluted solution?

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Question 6 6. MgCl2 and NaCl are both salts that are used to treat roads. Which salt will have the greatest effect on the freezing point and why?

Question 7 7. What is the dilution of solutions equation?

Question 8 8. How is a supersaturated solution made?

Question 9 9. Which of the following is NOT true regarding solubility curves?

Question 10 10. Which of the following is true?

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Question 11 11. Which of the following does NOT affect the rate of dissolution of a solute?

Question 12 12. What is the molarity of a solution made by dissolving 26.42 g of (NH4) 2 SO4 in enough water to make 50 mL of solution?

Question 13 13. What is the best definition of a solution?

Question 14 14. What volume would you need to dilute 0.2 L of a 15 M solution to obtain a 3 M solution?

Question 15 15. What is the osmotic pressure formula?

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Question 16 16. When is molality usually used?

Question 17 17. What is a solute?

Question 18 18. A lab technician dissolved 2 mol of X in 1 liter of water in order to make a 2 M solution. What did they do wrong?

Question 19 19. What is osmotic pressure?

Question 20 20. What is the equation used for determining molarity?

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Question 21 21. What does a solubility curve show?

Question 22 22. Why does an open soda go flat?

Question 23 23. To measure freezing point depression the following equation is used Delta T = - i Kf m. What is the m in this equation?

Question 24 24. How many grams of CH3 OH is needed to make a 0.244 M solution in 400 mL of water?

Question 25 25. How is solubility determined?

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Question 26 26. Which of the following is the best definition of a colligative property?

Question 27 27. What is the equation used to determine the mass percent of a solute in a solution?

Question 28 28. Because ethanol dissolves in water, it is:

Question 29 29. What is an electrolyte?

Question 30 30. Why does a spoonful of sugar dissolve faster than a sugar cube?

Elements, Compounds & Mixtures Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

NMTA Middle Grades General Science (204): Practice & Study Guide  /  Science Courses
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