2. Why should medicines prepared as suspensions be shaken well before use? a. to mix in the powder drug that may have settled at the bottom b. to make sure the flavors are mixed in so that the dose will not taste bitter 3. C. d. to turn the suspension into a colloid first before getting a dose to turn the suspension into a solution first before getting a dose What is the difference between a suspension and a colloid? a. Suspensions are for medicines while colloids are for food. b. Suspensions are heterogeneous while colloids are homogeneous. C. Suspensions lose their consistency while colloids remain consistent. d. Suspensions may either be solids, liquids, or gases while colloids are all liquids. 4. What is Brownian motion? a. It is the settling of particles in a suspension. b. It is the movement of particles in a colloid. C. It is the scattering of light by the colloidal particles. d. It is the dissolving of particles in a solution. 5. What is the best description of Tyndall effect in a colloid? a. The particles are large enough to scatter light. b. The particles are small enough to scatter light. C. The particles cannot be seen through a microscope. d. The particles are easily seen by the eyes. 6. Which of the following is the characteristics of colloids? a. homogeneous mixtures that seem to be heterogeneous heterogeneous mixtures that seem to be homogeneous C. suspensions that look like solutions b. d. solutions that look like colloids 7. Milk is a mixture of liquid butter fat and water. What kind of mixture is it? colloid solution a. b. foam C. d. suspension 8. Why does the sky looks blue in daytime and looks red during sunset? a. because of Brownian movement b. because of the suspended particles in the air C. because of Tyndall effect d. because of particles that are easily seen by the eye 9. What kinds of colloids are cloud and fog? a. liquid dispersed in solid b. gas dispersed in liquid C. gas dispersed in solid d. liquid dispersed in gas
