BIOL 1105 Chapter Notes - Chapter 3: Covalent Bond, Hydrogen Bond, Dehydration Reaction
10 Sep 2018
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Molecules containing carbon can form straight chains, branches, or even rings, balls, tubes, and coils. Binds with other carbon atoms, hydrogen, oxygen, nitrogen, phosphorus or sulfur. Carbon=hydrogen covalent bonds store considerable energy , hydrocarbons make good fuels. Functional groups account for differences in molecular properties. Definite chemical properties that they retain no matter where they occur. Polar because of the electronegativity of the oxygen atoms. Hydrogen bond donors and acceptors can be predicted based on their electronegativities electronegativities. Isomers have the same molecular formulas but different structure. Organic molecules having the same molecular or empirical formulas can exist in different forms. Differences in the actual structure of their carbon skeleton. Have the same carbon skeleton, but differ in how the groups attached to this skeleton are arranged in space. Chiral compounds are characterized by their effect on polarized light. Polarized light has a single plane, and chiral molecules rotate this plane either to the right (dextro) or left (levo)
