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52_100_Lecture_10_4_07

52_100_Lecture_10_4_07 - Whose Responsibility is it Q Can't...

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10/3/2007 1 Whose Responsibility is it? Q: Can't adults make their own intelligent choices about what to eat? A: Sure. But can children? …Our lawsuit only concerned children under the age of ten. Q: Shouldn’t the parents take care of the choices for their children? A: Yes, but how many people know about trans fats? Before 2006 it wasn’t on food labels. Wh b di h l k i ? What about direct school marketing programs? Cyclic Hydrocarbons Hydrocarbons don’t have to be in chains. They can also make rings or cyclic structures H C CH H 2 C H 2 C CH 2 2 H 2 C H 2 C CH 2 CH 2 H 2 C cyclobutane cyclopentane H 2 C H 2 C C H 2 CH 2 CH 2 H 2 C cyclohexane
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10/3/2007 2 Aromatic Hydrocarbons All aromatic compounds contain at least one highly unsaturated ring of six carbons, known as benzene H C C C C C C H H H H H Aromatic: a compound that contains at least one benzene ring as part of its structure Many plant-derived compound that have pleasant aromas contain a benzene ring Aromatic Compounds O H Cinnamaldehyde (found in cinnamon) OH O CH 3 O Methyl salicylate (oil of wintergreen) O Anethole (in oil of anise)
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10/3/2007 3 Functional Groups Functional Group: a small set of atoms held together by covalent bonds in a specific, characteristic arrangement that is responsible for the principal chemical and
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