test 4 2006

test 4 2006 - 1 Test #4 IPPH 362 11/20/06 Name_ Seat _ I....

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1 Test #4 IPPH 362 Name_______________ 11/20/06 Seat ________________ I. Short answers. Each answer is worth 2 points. No partial credit. 1. Indicate the function of each ingredient in Ultra Mide 25 Extra Strength Moisturizer. (1point for each answer) 1. emulsifier 2. helps stratum corneum retain moisture 3. humectant 4. oil phase 5. preservative 6. thicken oil phase 7. water phase ______ cetyl alcohol ______ glycerin ______ glycerin monostearate ___4 __ lanolin ______ magnesium aluminum silicate (bentonite clay) ______ mineral oil ______ propylene glycol ______ propylene glycol monstearate ___7 __ water ______ urea ________ 2. The pH at the surface of the skin is _______. ________ 3. Propylene glycol monostearate has a lower HLB than sodium stearate. (True or false) ________ 4. The required HLB of an oil to form an O/W emulsion is always lower than the required HLB to form a W/O emulsion. (true or false) ________ 5. The surface tension of a liquid is directly related to the strength of the intermolecular attractive forces between the molecules of the liquid. (True or false)
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2 6. What are the two structural requirements for a molecule to function as a surface active agent? (1 point each) 1. 2. ________ 7. A surface active agent’s preferred location in an O/W emulsion is: 1. at the interface 2. in the water phase as micelles 3. in the oil phase as inverse micelles 8. Propose a test to determine if a clear liquid is a true solution or a micellar solution. ________________________________________________ ________________________________________________ 9.
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test 4 2006 - 1 Test #4 IPPH 362 11/20/06 Name_ Seat _ I....

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