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Organic Compounds Student Learning Objectives
(Chapter 14) Student Learning Objectives Identify substances which contain organic compounds Discuss the importance of structure
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What is organic chemistry?
Organic chemistry is the study of carbon compounds. Carbon has a unique ability to bond with itself in complex covalent bonds. A single molecular formula may have several structures. IDTIMWYTIM: "Organic" 90% of compounds
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Some Structures for C5H10
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Practice These Practice Problems are presented in class
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Retinol (most common form of vitamin A)
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In what substances are hydrocarbons found?
All hydrocarbons contain hydrogen and carbon. Aromatic hydrocarbons contain the Benzene Ring (C6H6) Benzene Symbol
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Aromatics (benzene substances) have a strong aroma.
Benzene is a carcinogen. Gasoline Adhesives Perfumes Paint Stripper Tobacco Household Cleaners
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Question These Practice Problems are presented in class
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CnH2n+2 Alcanes Aliphatic hydrocarbons contain no Benzene Ring Methane
Propane Ethane Cyclo-Pentane
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n-hydrocarbons: unbranched
These Practice Problems are presented in class Alcane hydrocarbons have structural isomers. Same molecular formula Different physical and chemical properties n-hydrocarbons: unbranched iso-hydrocarbons: The prefix iso-, which stands for isomer, is commonly given to 2-methyl alkanes. In other words, if there is methyl group located on the second carbon of a carbon chain, we can use the prefix iso-. The prefix will be placed in front of the alkane name that indicates the total number of carbons. neo-hydrocarbons:The prefix neo- refers to a substituent whose second-to-last carbon of the chain is trisubstituted (has three methyl groups attached to it). A neo-pentyl has five carbons total.
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Octane ratings are based on the abundances of the different structural isomers of Pentane.
Straight-chain hydrocarbons burn faster Branching iso-hydrocarbons burn slower neo-pentane highest octane rating iso-pentane n-pentane lowest octane rating
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Alkyl hydrocarbons are Alkanes with 1 hydrogen (H) replaced by Hydroxide (OH)
Alcohol Isomers
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Organic molecules have a base unit called a functional group.
Carbonyl Alkene Alkyl Amine Benzyl Ketone
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Why are plastics and proteins difficult to break down?
Polymers are very long molecules made up of repeating monomers. (chains of monomers) Human-made polymers are commonly called plastics. Naturally Occurring Human Produced DNA Carpet Proteins Plastics Complex Carbohydrates Chewing Gum From DNA to Silly Putty, the diverse world of polymers - Jan Mattingly
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Polystyrene polymerization many styrene polystyrene
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What are carbohydrates?
A carbohydrate contains carbon and water. Carbohydrates are divided into 3 classes. Glucose C6(H2O)6 Monosaccharide Fructose Sucrose C12(H2O)11 Disaccharide Cellulose (Starch) (C6H10O5)n Polysaccharides The simple story of photosynthesis and food - Amanda Ooten
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