Organic Chemistry

What is an organic compound? What are inorganic compounds? Why are there more organic compounds than inorganic? What are hydrocarbons? What are saturated hydrocarbons? What are the derivatives of hydrocarbons? What is an isomer? What is ethylene and where does it come from? What is polyethylene? Where does petroleum come from? What is petrol and gasoline? What is crude oil?

What atoms make up methanol? When do carbon monoxide form? What 5 things do living organisms do? What is the basic unit of life? What is the meaning of metabolism? What is the meaning of carbohydrate? What is a complex carbohydrate? What are the examples of complex carbohydrates? What is the function of carbohydrates? Where can each be found? How many amino acids are needed to make protein? What is the function of protein?

Vitalist theory Living organism – (4 elements) 1828 – Friedrich Wohler Decomposed inorganic compound – Urea – urine Vitalist theory disappeared

Organic Compounds Compound – 2 Organic chemistry – carbon principle element – living or non-living Inorganic chemistry – no carbon Millions of organic compounds Carbon valence of 4

Hydrocarbons Carbon + Hydrogen The carbon to carbon - single, double, or triple bonds. Satisfied = saturated Alkanes = saturated hydrocarbons – single bond Methane – most abundant organic compound

Hydrocarbons Methane = 1Carbon Methane = Single bond Ethane = 2 Carbons Ethene = double bond Ethyne = Triple bond Propane = 3 Carbons Butane = 4 Carbons

Isomers - compounds – same molecular formula – different structures.

Alkenes and Alkynes Alkenes – hydrocarbons with at least one double carbon to carbon bond. The alkenes are unsaturated An alkyne is a hydrocarbon with at least one carbon to carbon triple bond

Ethene – ethylene is the gas that ripens fruit, and a ripe fruit emits the gas, which will act on unripe fruit. Thus, a ripe tomato placed in a sealed bag with green tomatoes will help ripen them.

Ethylene – raw material in the chemical industry. Processing of petroleum – ethylene. Polyethylene plastic PE = LDPE or HDPE LD= Low density HD= High density

Petroleum

Petroleum is a mixture of alkanes, cycloalkanes, and aromatic hydrocarbons. –Petroleum is formed from the slow decomposition of buried marine life, primarily plankton and algae. As petroleum is formed it is forced through porous rock until it reaches an impervious layer of rock. –Here it forms an accumulation of petroleum and saturated the porous rock creating an oil field.

Crude oil is the petroleum that is pumped directly from the ground. –It is a complex mixture of hydrocarbons with one or two carbon atoms up to a limit of about 50 carbon atoms. –This is usually not useful, so it must separated by distillation.

Crude oil from the ground is separated into usable groups of hydrocarbons at this Louisiana refinery. Each petroleum product has a boiling point range, or "cut," of distilled vapors that collect in condensing towers.

Hydrocarbon Derivatives

Alcohols Hydrogen replaced by a hydroxyl (-OH) group. The alcohol is named using the hydrocarbon name and adding the suffix –ol. methane becomes methanol pentane becomes pentanol. Hydrocarbon derivatives - one or more hydrogen atoms is replaced by an element or a group of elements other than hydrogen. Halogens (F 2, Cl 2, Br 2, I 2,)

Gasoline - (C 8 H 18 )for example- no oxygen atoms. Gasohol - ethyl alcohol, C 2 H 5 OH, has oxygen. The addition of alcohol to gasoline, therefore, adds oxygen to the fuel. Since carbon monoxide forms when there is an insufficient supply of oxygen, the addition of alcohol to gasoline helps cut down on carbon monoxide emissions.

Organic Compounds of Life

Living organisms have to be able to: Exchange matter and energy with their surroundings. Transform matter and energy into different forms. Respond to changes in their environment. Grow. Reproduce.

Macromolecules A macromolecule is a combination of many smaller similar molecules polymerized into a chain structure. Living organism has 3 main types of macromolecules which control all activities and determine what an organism will do and become. Carbohydrates Proteins Nucleic acids

The cell is the basic unit of life. The cell makes up all living organisms that we know of. Cells are in turn made of macromolecules that form inside the cell. Other macromolecules control the formation of these macromolecules. Metabolism is the breaking down or building up of macromolecules. Generally, breaking down macromolecules releases energy that the organism can use as an energy source. The building up of macromolecules requires energy, that is obtained from breaking down macromolecules.

Carbohydrates = watered carbon Carbohydrates - large group of compounds – sugars, starches, and cellulose Generally sugars are a storage source of energy Simple sugar C 6 H 12 O 6 monosaccharide Glucose = carbohydrate Glucose is the carbohydrate that animals utilize mostly for their energy.

C 6 H 12 O 6 + C 6 H 12 O 6 = C 12 H 22 O 11 + H 2 O glucosefructosesucrosewater (monosaccharides)(dissaccharide )

Simple sugars combine = complex carbohydrates Complex carbohydrates – cellulose, starch and glycogen Complex carbohydrates – polysaccharide A monosaccharide is one that is made up of just one sugar unit. A disaccharide is one that is made up of two sugar units. A polysaccharide is one that is made up of many sugar units.

Starch is a storage carbohydrate used by plants. When plants photosynthesize the use the energy from sunlight to convert carbon dioxide and water into sugars and oxygen. Glycogen is a storage carbohydrate used by animals. Cellulose is a polysaccharide that is used in plant cell walls to maintain their structure.

Proteins Enzymes – catalysts (assistants) = speed up reaction Hormones – chemical messengers Antibody – help defend the body Amino acids – monomers (Nitrogen and 2 Hydrogens)

Proteins Proteins - macromolecules - polymers of amino acids. Structurally – makes muscle tissue, connective tissue, skin, hair, and nails, etc. Functionally proteins are enzymes which catalyze biochemical reactions Building up macromolecules requires energy and an enzyme lowers the amount of energy that is necessary.

Twenty amino acids - produce proteins. Amino acids are polymerized by a dehydration synthesis - long chains of repeating amino acids called a protein. There are 10 amino acids which humans cannot synthesize themselves and must be in the diet, these are called essential amino acids.

Nucleic Acids = store and transfer information DNA – genetic material – determine – protein – manufactured RNA – process of protein manufacture

Fats and Oils Humans also take in carbohydrates and use the break down of the carbohydrate as an energy source. When either of these is taken in in quantities above that that is necessary for the body, they are converted into fats in animals and oils in plants. Fats and oils are a long term storage for energy sources.

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