Objectives Be able to describe how carbon atoms bond covalently to form organic compounds Be able to describe how carbon atoms bond covalently to form organic compounds Be able to identify the names and structures of groups of simple organic compounds and polymers Be able to identify the names and structures of groups of simple organic compounds and polymers Be able to identify what makes up the polymers that are essential to life and how they are essential Be able to identify what makes up the polymers that are essential to life and how they are essential

Important Vocabulary Organic compound Organic compound Hydrocarbon Hydrocarbon Alkanes Alkanes Alkenes Alkenes Alcohol Alcohol Monomer Monomer Polymer Polymer Biochemical compound Biochemical compound Carbohydrate Carbohydrate Protein Protein Lipid Lipid Nucleic acid Nucleic acid

Organic Compounds Are compounds that originate from living things Are compounds that originate from living things They are covalently bonded molecules They are covalently bonded molecules They always contain carbon, and almost always hydrogen They always contain carbon, and almost always hydrogen Oxygen, nitrogen, sulfur and phosphorus are also found in organic compounds Oxygen, nitrogen, sulfur and phosphorus are also found in organic compounds

Examples of Organic Compounds Acetylsalicylic acid, C 9 H 8 O 4 is the effective ingredient in aspirin Acetylsalicylic acid, C 9 H 8 O 4 is the effective ingredient in aspirin Sugarless chewing gum also has organic compounds as ingredients. Sugarless chewing gum also has organic compounds as ingredients.  The sweeteners sorbitol, C 6 H 14 O 6, and aspartame, C 14 H 18 N 2 O 5

Organic Compounds Carbon atoms form 4 covalent bonds in organic compounds Carbon atoms form 4 covalent bonds in organic compounds Compounds only made of carbon and hydrogen are called hydrocarbons Compounds only made of carbon and hydrogen are called hydrocarbons Carbon can form single, double and triple bonds Carbon can form single, double and triple bonds The type of bond that forms between carbon atoms determines the name of its organic compound The type of bond that forms between carbon atoms determines the name of its organic compound

Alkanes Are hydrocarbons that have only single covalent bonds Are hydrocarbons that have only single covalent bonds Methane, ethane & propane all line up in a row structurally Methane, ethane & propane all line up in a row structurally Above 3 carbons, alkanes can have branches or rings Above 3 carbons, alkanes can have branches or rings

Alkane Structures

More Alkane Structures

Alkenes Are hydrocarbons with at least one double covalent bond Are hydrocarbons with at least one double covalent bond Their names end in –ene instead of –ane Their names end in –ene instead of –ane Examples: ethylene and propylene Examples: ethylene and propylene Ethylene is formed when fruit ripens Ethylene is formed when fruit ripens Propylene is used to make rubbing alcohol & plastics Propylene is used to make rubbing alcohol & plastics

Alcohols Are organic compounds that are made up of carbon, hydrogen & oxygen Are organic compounds that are made up of carbon, hydrogen & oxygen They have a hydroxyl groups ( –OH ) They have a hydroxyl groups ( –OH ) Their names end in –ol Their names end in –ol Alcohol molecules behave similar to water molecules: Alcohol molecules behave similar to water molecules:  Alcohol molecules are attracted to each other  They are liquids at room temp.  They also have high boiling points

Alcohols

Polymers Are long chains of repeating subunits called monomers Are long chains of repeating subunits called monomers Some are natural and others are man-made Some are natural and others are man-made Rubber, wood, cotton, wool, starch, protein and DNA are all natural polymers Rubber, wood, cotton, wool, starch, protein and DNA are all natural polymers Plastics & fibers are man-made polymers Plastics & fibers are man-made polymers The properties of a polymer are determined by its structure The properties of a polymer are determined by its structure

Polyethene Hard Plastics Nylon Fibers Polyester Fibers

Biochemical Compounds Are naturally occurring organic compounds that are very important to living things Are naturally occurring organic compounds that are very important to living things There are 4 types of biochemical compounds: There are 4 types of biochemical compounds:  Carbohydrates  Proteins  Lipids  Nucleic Acids

Carbohydrates Are made of monomers of simple sugars like glucose and fructose Are made of monomers of simple sugars like glucose and fructose Glucose provides energy to living things Glucose provides energy to living things Glucose that is not needed right away for energy is stored as glycogen Glucose that is not needed right away for energy is stored as glycogen Starch is made of many bonded glucose molecules in chains pack closely together Starch is made of many bonded glucose molecules in chains pack closely together  Starch is stored by plants

Proteins Are polymers of different amino acids in chains Are polymers of different amino acids in chains Amino acids are made of carbon, hydrogen, oxygen, nitrogen, and (some) sulfur Amino acids are made of carbon, hydrogen, oxygen, nitrogen, and (some) sulfur There are 20 different amino acids that can make up proteins There are 20 different amino acids that can make up proteins The way that amino acids combine determines which kind of protein is made The way that amino acids combine determines which kind of protein is made Most proteins are enzymes which break down substances or speed up chemical reactions Most proteins are enzymes which break down substances or speed up chemical reactions

Lipids Are large, non-polar organic molecules Are large, non-polar organic molecules They do not dissolve in water They do not dissolve in water Include fatty acids, triglycerides, phospholipids, steroids, waxes, and pigments Include fatty acids, triglycerides, phospholipids, steroids, waxes, and pigments Have a higher ratio of carbon and hydrogen atoms to oxygen atoms than carbohydrates Have a higher ratio of carbon and hydrogen atoms to oxygen atoms than carbohydrates They store more energy They store more energy

Nucleic Acids Are very large & complex molecules Are very large & complex molecules They store & transfer important information in the cell They store & transfer important information in the cell 2 types 2 typesDNARNA

DNA Is a polymer with a complex structure Is a polymer with a complex structure DNA determines your genetic makeup DNA determines your genetic makeup It contains carbon, hydrogen, oxygen, nitrogen and phosphorus It contains carbon, hydrogen, oxygen, nitrogen and phosphorus It is made up of monomers called nucleotides It is made up of monomers called nucleotides Each nucleotide is made of a sugar, a phosphate and a nitrogen base Each nucleotide is made of a sugar, a phosphate and a nitrogen base There are 4 types of nitrogen bases: adenine, guanine, thymine, and cytosine There are 4 types of nitrogen bases: adenine, guanine, thymine, and cytosine The nucleotides are paired together and form a 2- stranded ladder-like structure that is twisted The nucleotides are paired together and form a 2- stranded ladder-like structure that is twisted This structure is called a double helix This structure is called a double helix

DNA

Nucleotides Know the three parts of a nucleotide: A sugar, a phosphate & a nitrogen base

RNA Ribonucleic Acid Ribonucleic Acid Composed of nucleotides Composed of nucleotides Stores and transfers information from DNA to make proteins Stores and transfers information from DNA to make proteins It also act as enzymes It also act as enzymes