Transcription of LESSON 7: Milk Rainbow
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LESSON 7: Milk Rainbow
92 LESSON 1:Goofy Putty92 LESSON 1:Goofy PuttyYou Be The Chemist Activity Guides |page 92 You Be The Chemist Activity Guides |page 92 You Be The Chemist Activity Guides |page 92 You Be The Chemist Activity Guide |page 92 LESSON 7:Milk RainbowESTIMATED TIMES etup:5 minutes|Procedure:5 10 minutes DESCRIPTIONC reate swirls of color in milk and explore a propertyof liquids known as surface tension. OBJECTIVEThis LESSON will demonstrate the property of surfacetension and the effect that soap, a surfactant, has on thesurface tension of milk. Students will apply soap tomilk with food coloring on the surface to visualize theeffect of soap on the surface tension of milk.
The molecules that make up soaps and detergents have two main parts (ends) that behave differently. One end of a soap molecule is attracted to water, while the other components are repelled by water but attracted to fats. HYPOTHESIS uWhen drops of liquid dish soap are added to milk with drops of food coloring on the
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