1. Name: __________________________________ Grade and Section: ______________
SCIENCE 7 (Written Work No. 3)
I. Read each question carefully. Write the letter of the correct answer on the space before the number.
___1. What are solutions made up of?
a. solute and solvents c. only solutes
b. solutes and crystals d. two solids
___2. It is the component of solution present in small amount.
a. solvent b. solute c. mixture d. all of the above
___3. Water is an example of _____________.
a. solvent b. solute c. mixture d. all of the above
___4. Which of the following is not an example of solute?
a. sugar b. salt c. powdered milk d. water
___5. Which one of the following substances is known as the universal solvent?
a. Water b. Air c. Oil d. Methylated spirits
___6. A solution with a large amount of solute compared to solvent.
a. Saturated Solution c. Unsaturated solution
b. Dilute Solution d. Supersaturated solution
___7. It contains less solute than can dissolved at a given temperature.
a. Saturated Solution c. Unsaturated solution
b. Dilute Solution d. Concentrated solution
___8. Solution which contains maximum possible amount of solute at a given temperature.
a.Saturated Solution c. Unsaturated solution
b.Dilute Solution d. Concentrated solution
___9. What happen when a small crystal of solute is added to a saturated solution?
a. The crystal dissolved completely. c. The crystal grows bigger.
b. The crystal remains the same d. The crystal becomes solid.
___10.Which of the following operations usually makes a substance dissolve faster in a solvent?
a. stirring c. crushing of substance to a powder
b. raising the temperature d. all of the above
___11. The oceans are an example of ____ solution
a. an anhydrous b. a liquid c. a gaseous d. a solid
___12. The amount of solute that can be dissolved in a specific amount of solvent at a given temperature.
a. Concentration b. Density c. dilution d. Solubility
___13. It affects how fast a solid solute dissolves in water.
a. Pressure b. Nature of Solute c. Temperature d. All of the above
II. Identify which type of solution was created in each step. Choose your answer on the the box.
III. On the line at the left, write the letter of the definition that best matches each term.
_______ 19. solution a.substance being dissolved
_______ 20. solute b.solution with water as the solvent
_______ 21. solvent c. substance that dissolve the solute.
_______ 22. saturated d. composed of two or more substances.
_______ 23. unsaturated e. a solutions that contain more than the expected amount of solute
_______ 24. aqueous solution f. contain less solute than the maximum amount of solvent
_______ 25. supersaturated g. contains maximum amount of solute that can dissolve in a given
amount of solvent
III. Factors affecting how fast a solid solute dissolves.
26. ___________________________
27. ___________________________
28. ___________________________
29. ___________________________
30. ___________________________
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2. 2. What is the percent by volume of a solution formed by added 1500 mL of acetone to 4500 mL
of water?
3. Calculate the percent by volume of alcohol in 95 mL of solutions which contains 25mL of
alcohol.
