Chapter 4 lecture notes

Skeletons of most organic molecules carbon chains

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Unformatted text preview: )2 Key Point: For each molecule, the arrangement of atoms completes the valance shells of all the atoms Carbon chains form the skeletons of most organic molecules Carbon chains vary in length and shape Length Branching Bra Single or Double bonds Ring Structures All of these molecules are hydrocarbons What do all hydrocarbons have in common? All composed of only hydrogen and carbon. Fossils fuels. Not prevalent in living organisms. Is the C ­H covalent bond in a hydrocarbon polar or nonpolar? nonpolar Many organic molecules, such as fats, have hydrocarbon components Fat Droplets * * Adipose Cells highly non-polar very hydrophobic Fat Molecule Hydrocarbons can undergo reacTons that release a large amount of energy Later in the semester, we will discuss how scienTsts hope to bio ­engineer algae to produced biofuels (hydrocarbons) Isomers: compounds with the same molecular formula but different structures and properTes Structural Isomers (C5H12) different covalent arrangements of their atoms Cis ­Trans Isomers (also called Geometric Isomers) Same covalent arrangements but differ in spaTal arra...
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This document was uploaded on 02/10/2014.

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