Quiz on Colloids, Suspensions and Their Characteristics

 

Directions: Write the letter of the correct answer.

1.What kind of mixture is formed when oil is mixed with water?

 

a.         Solution                b. water

 

c.      Colloids                d. suspension

2.How does suspension appear?

 

a.     a.  It appears clear.          b. It appears cloudy.

 

c.It appears messy.  d. none of the above

3.Which of the following statements do not describe a suspension?

 

a.      Suspensions are larger particles is visible to the naked eyes.

 

b.     Suspensions are particles that settle out when left undisturbed.

 

c.      Mixture of soil and water is an example of suspension.

 

d.     Suspensions are homogeneous mixture and invisible to the naked eye.

4.What kind of mixture is formed when larger particles settle out when left undisturbed?

 

a.      Colloid                  b. suspension 

c.       Solution               d. solvent

5.Which of the following mixtures is not an example of a suspension?

 

a.salt and water                       b. oil and water

 

c.sand and water                     d.chalk and water

6. Which of the following is an example of a colloid?

                  a. mayonnaise                   b. cooking oil

                  c. soft drinks                     d. bubbles in water

7. What phenomenon occur when dispersed colloid particles scatter light?

                  a. Tyndall effect   b. shaft effect

                  c. miscible                        d. immiscible

8. What example of colloid has dispersed solid particles in gas?

                  a. milk                               b. smoke

                  c. gelatin               d. blood

9. What is the most abundant particle in a colloid?

                  a. dispersing mediums     b. dispersing phases

                  c. miscible                                    d. immiscible

10. Why is milk categorized as emulsion?

a. because settling cannot separate the components of homogenized milk

b. because settling can separate the components of homogenized milk

c. The colloid’s particles of milk are larger.

d. The colloid’s particles are smaller.

11. Soda pop, whipped cream, and beaten egg whites are examples of what type of colloids?

                  a. foam      b. emulsion     c. sol               d. aerosol

12. How would you differentiate a colloid mixture from a solution?

 a. The colloid’s particles are larger.

 b. The colloid’s particles are smaller.

 c. A colloid has a positive charge.

 d. A colloid has a negative charge.

13. A colloid is a stable combination of particles of one substance that are dissolved or suspended in a second substance.

                  a. True                   c. Maybe

                  b. False                 d. None of these

14. An _______ is a sol with a continuous phase gas. Fog is an ________ of water droplets.

                  a. aerosol c. sol

                  b. emulsion           d. foam

15. An ______ is a sol in which the suspended particles are liquid droplets and the continuous phase is also a liquid. The two phases are immiscible, otherwise

                  a. solution would form     b. aerosol

                  c. emulsion                                   d. foam

 

Identify whether the answer is Yes or No. Write your answer on a separate sheet.

___________16. Suspensions can be used in processing medicine, beverage and food.

 

___________17. The appearance of suspension is clear and uniform in color.

 

___________18. Mixture of tea leaves in hot water is an example of suspension.

 

___________19. Suspension appears cloudy.

 

_________20. Suspension is a kind of mixture where particles are evenly

 

distributed and invisible.

 

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