chem lab 13 - Sheldon Pope Brandon Pezzuto Why Do Things...

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Sheldon Pope Brandon Pezzuto Why Do Things Smell? Chem 404 Lab Section 7 2-7-08 Introduction: This lab is meant to teach how the structures of molecules affect the way our nose perceives them. This lab discovers the essential reason why certain items smell and other do not.
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The lab explores the structure and other aspects of molecules that create scents. Terms: Isomer: Isomers are molecules with the same formula, except they has different structures. There are two types of isomers. A structural isomer is when the structure is different for the same molecular formula. A spatial isomer is when the atoms attached to a central atom are different in two molecules. Bonding Behavior : How many bonds an atom usually forms. Valence : The type of bond an atom usually likes to form. Report: 1. Letter Descripton Consensus A Banana Banana B air freshener Mild air freshener C Spearmint Spearmint D Mentos Wintergreen E Nail polish remover Nail polish remover/peanut butter F Bubble gum Bubble gum G The zoo The zoo H Spearmint Minty I Dirty clothes Dirty soapy laundry J Fruity- Orange Citrus K Cleaning product Cleaning product L Soap or lotion White tic tacs 2. a. Our group’s philosophy towards why things smell differently in Part A was that our noses receptors were not compatible to certain smells because of some sort of genetic inheritance.
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b. Generally speaking, our group classified the smells into two general groups, good smelling and bad smelling. There were no patterns evident in Part A of the experiment. c. Our group was very confident that we would be able to put the smells in the correct categories because there is a large diversity or wide range between the smells. Some were putrid and some were pleasant. 3. a. The ideas we had were that the structure of each molecule affected how smells actually smelled. We assumed the boiling points had something to do with structure, so that had nothing to do with smell. We observed two similar scents had almost the same chemical formulas. b. If at this point we had a view of each of the geometric structures, then possibly we
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chem lab 13 - Sheldon Pope Brandon Pezzuto Why Do Things...

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