Honors Chemistry Unit 7B Organic Chemistry continued Alcohols and Ethers Aldehydes, Ketones and carboxylic acids Esters Amines 1 Other Organic Compounds Functional Group – Same Functional Group o o - Alcohols: Organic compound that General Formula Naming: o If no number is present in front of the name – presume the –OH is on carbon number 1. o If 1 -OH group - Examples: o If two or more -OH groups 2= 3= 4= Keep the ane; add the appropriate ending listed above: Examples: 2 Ethers: Organic compounds General Formula: - R and R’ Naming: o– o– o– Examples: 3 Assignment # ____ Name ____________________________________ Class Number ________ Date ________ Name ____________________________________ Class Number ________ Kit # _______ Honors Chemistry Lab Practical "Organic Chemistry" Alcohols and Ethers (If absent:- Write an I-search paper describing an alcohol or ether and how it is used in everyday life. This must be written in the first person. See page 16 of the packet for questions to answer.) (5 points) Grade/Initials _______________ 1. 2-methylpropanol _______________ 2. 2-propanol (rubbing alcohol) _______________ 3. 1,2,3-propanetriol ______________ 4. Butyl ethyl ether _______________ 5. Dicyclopentyl ether + _______________ 1 point lost for pieces missing from your kit, above not filled-in completely or not totaled on the line above. (Your total will change if the above is not done) / 2.5 _______________ Total points for Alcohols and Ethers 4 Name__________________________________________ Other Organic Compounds – WS I Draw the following compounds (number the parent chain and circle any branches): 1. 1,8 nonanediol 4. dibutyl ether 2. 1, 3, 5 trimethylbenzene 5. 4-decanol 7. 1,2dibromo -1-chloroethane 3. 2-bromo-2-fluoro prppane 6. 1-iodocyclobutane 8. 4-ethyl -3,6-difluoro-5-propyl-1-cyclohexene 9. 2,3-dichloro-7,8,9-triiodo-6,7,8-tripropyl-4-dodecene 10. 1,2,3,4,5,6-hexafluoro-1-hexanol 11. Decyl octyl ether 5 6 Other Organic Compounds Continued Carbonyl group is C=O Aldehydes: Organic compounds General Form: O R–C–H Naming: - Example O C-C-H lanthte 7 Ketones: Organic compound General Form: O R – C – R’ Naming: Example: O C–C-C 2-propanone 8 Carboxylic Acids: O - C – OH Carboxyl group is Organic compounds General Form: O R – C - OH Naming: o If one carboxyl group o If more than one carboxyl group For 2 = dioic acid Example: HOOC-C-C-COOH 1,4-butanedioic acid 9 Assignment # ____ Name ____________________________________ Class Number ________ Date ________ Name ____________________________________ Class Number ________ Kit # _______ Honors Chemistry Lab Practical "Organic Chemistry" Aldehydes and Ketones (If absent:- Write an I-search paper describing an aldehyde or ketone and how it is used in everyday life. This must be written in the first person. See page 16 for details of an I-search.) (5 points) Grade/Initials _______________ 1. 2 - propanone (acetone) _______________ 2. 2-methylpropanal _______________ 3. 2,2-dimethylpentanal _______________ 4. methanal (formaldehyde) _______________ 5. 2-pentanone / 2.5 _______________ 5 Total points for Aldehydes and Ketones ______________ 1 point lost for pieces missing from your kit, above not filled-in completely or not totaled on the line above. (Your total will change if the above is not done) 10 Assignment # ____ Name ____________________________________ Class Number ________ Date ________ Name ____________________________________ Class Number ________ Kit # _______ Honors Chemistry Lab Practical "Organic Chemistry" Carboxylic Acids (If absent:- Write an I-search paper describing a carboxylic acid and how it is used in everyday life. This must be written in the first person. See page 16 for details of an I-search.) (5 points) Grade/Initials _______________ 1. butanoic acid _______________ 2. 3-methylpentanoic acid _______________ 3. 3, 3-difloro-4-ethylhexanoic acid _______________ 4. 2-butylpropanedioc acid _______________ 5. 4-ethyl-2-methylheptanoic acid / 2.5 _______________ Total points for Carboxylic Acids _______________ 1 point lost for pieces missing from your kit, above not filled-in completely or not totaled on the line above. (Your total will change if the above is not done) 11 Name__________________________________________ Other Organic Compounds – WS II Draw the following compounds (number the parent chain and circle any branches): 1. 1,5 pentanedioic acid 4. 1,2,4 tributyl benzene 7. 1,2-dichlorocyclohexane 9. 3-iodo-1-propanal 2. 1 heptanal 3. 3-hexanone 5. 3,5 dimethyl- 4 propyl octane 6. Butyl methyl ether 8. Dicyclopentylmethanone 10. 4,5,6,7-tetrabromo -3,8 dichloro -5,6-diethyl-3,8-dimethyl-1,10-decanedioic acid 12 13 More Organic Compounds Continued (again)! Esters: Organic compounds O R - C - OH (Acid) O R - C - O - R’ (Ester) Naming: Parent Chain o o o o Branches o o Example: O C - C - O - C - C-C 2 1 1 2 3 (Parent) (Alkyl branch) 14 Parent Chain: Branch: Final Name: Example: O C - C - C - C - O - C - C 4 3 2 1 1 2 Parent Name: Branch: Final Name: ____________________ Draw: Pentyl Hexanoate 15 Amines: Organic compounds based on NH3 R - N - R” R’ Naming: Primary amine: (______ hydrogen is replaced by an alkyl group) C–N–H H Name: ___________________________ Secondary amine: (____ hydrogens are replaced by alkyl groups) C–N–C - C H Name: _____ ______ _______________ Tertiary amine: (____ hydrogens are replaced by alkyl groups) C–N–C - C C–C-C 16 Assignment # ____ Name ____________________________________ Class Number ________ Date ________ Name ____________________________________ Class Number ________ Kit # _______ Honors Chemistry Lab Practical "Organic Chemistry" Esters and Amines (If absent:- Write an I-search paper describing an ester or amine and how it is used in everyday life. This must be written in the first person. See page 16 for details of an I-search.) (5 points) Grade/Initials _______________ 1. butylamine _______________ 2. ethylpropylamine _______________ 3. ethylmethanoate (an ester) Design one of the following for 2 points, if right it is placed on the board and other teams may not use it: _______________ 4. design an ester with 5 carbons total name _____________________________________ (can not be straight chain)(Instructor checks) _______________ 5. design an ester with 7 carbons total name _____________________________________ (can not be straight chain)(Instructor checks) _______________ +1 Bonus Points: pentylethanoate (banana flavoring) (must be done today) / 5 _______________ Total points for Esters/Amines _______________ 1 point lost for pieces missing from your kit, above not filled-in completely or not totaled on the line above. (Your total will change if the above is not done) 17 Name: __________________________________________________ Ester and Amine Worksheet Draw each of the following compounds: 1. ethyl butanoate 4. diethylamine 2. propyl-benzoate 5. butylethylpropylamine 7. methyl-2-methylhexanoate 8. propyl pentanoate 3. propylamine 6. hexyloctylamine 9. phenyl butanoate 18 19 Organic Compounds Family Functional Group Ending Naming Alkane Alkene Alkyne Aromatic Alkyl halides Alcohol 20 Family Functional Group Ending Naming Ether Aldehyde Ketone Carboxylic Acid Ester Amine 21 Assignment # ____ Name ____________________________________ Class Number ________ Date ________ Name ____________________________________ Class Number ________ Kit # _______ Honors Chemistry Lab Practical "Organic Chemistry" ALL Mixed Up Grade/Initials _______________ 1. 4-methyl-2,3-octanediol _______________ 2. 3-chloro-3-ethyl-2,2,4-trimethylpentane _______________ 3. 3-propylhexanoic acid ______________ 4. Butyl methyl propyl amine _______________ 5. Pentyl propyl ether _______________ 6. 1-bromo-4-iodo-2-propylbenzene _______________ 7. 6,6-difluoro-3-methyl-3-propyl-1,4-hexadiyne _______________ 8. 3-methyl-2,2-difluorobutanal _______________ 9. 4-ethyl-6-iodo-3,3-dimethyl-1-cyclohexene _______________ 10. Propylbenzoate _______________ 11. 5-fluoro-2-methyl-3-hexanone _______________ 12. 1-fluoro-2-methyl-3-hexanone Total Points = / 6 22 23 Name: __________________________________________________ Mixed Worksheet Draw each of the following structures: 1. 1-chloro-2-pentyl-4-propyl benzene 3. 2-iodo-3-methyl butanedial 5. propyl undecyl ether 7. 2,5-dimethyl-1-cyclopentanone 9. 1,4,9,11-dodecanetetrol 2. 5-fluoro-2-octyne 4. 5,5-dibromo-1,1,1-trifluoro-8-ethyldecane 6. 1,3,6-heptatriene 8. 2,3,4,5,6-pentafluoro-1-nonanal 10. 4-bromo-5-butyl-3-ethyl-1-cycloheptyne 24 25 Name ___________________________________________________________ Review for Organic Quest Part 1: Draw and name each of the six models: #1 #2 Name Name #3 #4 Name Name #5 #6 Name Name 26 Part 2: Draw the following structures: 1. 1,4,7-octanetriol 2. 2,4-dibromo-3-fluoro-1-hexene 3. heptyl hexyl ether 4. butyl pentanoate 5. 3-chloro-5-ethyl heptanal 6. dodecane 7. 4-bromo-5,5-difluoro-3-decanone 8. butyl ethyl pentyl amine 9. 2,3-dimethyl 4-nonene 10. 1-bromo-4-butyl-2-ethyl-3 propyl benzene 11. 1,4,5,trichloro-2-pentyne 12. 2,3,5,7,9 pentabromo-1,4,8-trichloro-6,6 diiodo undecane 27 28 29 Polymers The word comes from the Greek polumeres, which means `having many parts. Polymers are large molecules consisting of repeated chemical units (‘monomers') joined together, usually in a line, like beads on a string. Each `mer' is typically made up of more than 5 and less than 500 atoms; the word `polymer' is applied when you have more than about 50 `mers' stuck together. Your body is made of polymers. Amino acids (proteins) and nucleic acids (RNA and DNA), the genetic blueprint that defines people and other living things, are polymers, as well as cellulose and starches in the foods we eat. The most powerful computers - our brains - are mostly just a polymer glob soaking in salty water! The wheels on our skateboards and in-line skates, tires on our bikes and cars, various plastic containers, and clothing are just a few other examples. In fact, polymers surround us every day everywhere we go. Two important polymeric materials are plastics and elastomers. Plastics are a large and varied group of synthetic materials, which are processed by forming or molding into shape. We have many types of plastics such as polyethylene and nylon. Plastics can be divided into two classes, thermoplastics and thermosetting plastics, depending on how they are structurally and chemically bonded. Elastomers or rubbers can be deformed when a force is applied to them and can return to their original shape (or almost) when the force is released. Some Naturally Occurring Polymers Lac The insect Laccifer lacca—or just plain “lac”—lives on trees in India and Southeast Asia. It secretes a resin, also called lac, a polymer from which people make lacquer and shellac. They use these varnishes to coat ships, houses, furniture, fruit, pills, and candy. Rosin Dead wood and pulp from pine trees contain a polymer called rosin, which is used to make varnish and soap. Violinists rub rosin on the horsehairs in their bows to make them slide smoothly across the strings. Gymnasts and baseball players use rosin to improve their grips. 30 Latex South American Indians slash the bark of trees in the rain forest to obtain a milky white fluid called latex. They discovered that it could form a solid that was elastic; you could stretch it and it would snap back to its original shape. If you rubbed it on penciled words, the writing would disappear, so Europeans called it rubber. They molded it into tires for carriages and automobiles. Milk Drink up! Cow’s milk is loaded with the polymer casein, a protein. Without this polymer, cheese would come unglued. Glue would come unglued too, since casein from milk provides its sticking power. Casein also winds up in buttons, as well as rhinestones and other artificial In 1839 Charles Goodyear discovered that latex heated with sulfur—or “vulcanized”—would remain elastic at a wide range of temperatures. Although Goodyear didn’t know why his invention worked, we do today: The sulfur made bridges between the long chain polymers in rubber to keep them from sliding past one another or contracting into knots. gemstones. Amber Fossilized tree sap made of resin polymers can become yellow, orange, or brown amber. Ancient Greeks called amber “elektron,” and its ability to give a static electrical shock gave electrons and electricity their names. Scientists have retrieved intact genetic polymers, DNA, from ancient insects trapped in amber. Some even think the tiny bubbles in amber might hold the last remaining samples of air breathed by dinosaurs more than 60 million years ago. Silkworm Silkworms, which are actually caterpillars, are raised on silk farms and fed mulberry leaves. People in China discovered more than 4,500 years ago that they could unravel silk, a polymer, from the worms’ cocoons and weave it into soft fabrics. Incredibly, a single cocoon yields 330 to 980 yards (300 to 900 meters) of silk. For centuries, silk was so prized that exporting mulberry seeds or silkworm eggs from China was punished by death. Styrofoam Polystyrene foam can be made into cartons to protect eggs or into packing “peanuts” to cushion fragile objects for shipping. It insulates, so folks put drinks in foam cups and coolers to keep the warm ones warm and the cold ones cold. 31 Types Of Polymers Polymers are formed by chemical reactions in which a large number of molecules called monomers are joined sequentially, forming a chain. In many polymers, only one monomer is used. In others, two or three different monomers may be combined. Polymers are classified by the characteristics of the reactions by which they are formed. If all atoms in the monomers are incorporated into the polymer, the polymer is called an addition polymer. If some of the atoms of the monomers are released into small molecules, such as water, the polymer is called a condensation polymer. Copolymers The synthesis of macromolecules composed of more than one monomeric repeating unit has been explored as a means of controlling the properties of the resulting material. In this respect, it is useful to distinguish several ways in which different monomeric units might be incorporated in a polymeric molecule. The following examples refer to a two component system, in which one monomer is designated A and the other B. Statistical Copolymers Also called random copolymers. Here the monomeric units are distributed randomly, and sometimes unevenly, in the polymer chain: ~ABBAAABAABBBABAABA~. Alternating Copolymers Here the monomeric units are distributed in a regular periodic fashion, with nearly equimolar amounts of each in the chain: ~ABABABABABABABAB~. Block Copolymers Instead of a mixed distribution of monomeric units, a long sequence or block of one monomer is joined to a block of the second monomer: ~AAAAA-BBBBBBB~AAAAAAA~BBB~. Graft Copolymers As the name suggests, side chains of a given monomer are attached to the main chain of the second monomer: ~AAAAAAA(BBBBBBB~)AAAAAAA(BBBB~)AAA~. Polymer Properties While they all contain molecules with very long chains, there are some important differences between the properties of different types of polymers. Most polymers are formed into the desired shapes after softening or melting by heating. Some, like the familiar polyethylene and polystyrene, may be melted and reshaped again and again. These are called thermoplastic polymers. Many of these polymers are recycled. Thermosetting polymers char or burn when reheated. Examples include Bakelite and vulcanized rubber. Due to the fact that these polymers can not be reheated, it makes it much more difficult to recycle them. The major problem with recycling plastics is that they must be sorted by polymer composition. If the polymers were just mixed, called commingled plastic, they would not be able to be shaped into useable objects. The reason for this is the physical properties such as the melting point would be too variable in commingled plastic. 32 Plastic Recycling Over the past few decades, the use of polymers in disposable consumer goods has grown tremendously. This growth is proving to be taxing on the waste disposal system, consuming a large fraction of available landfill space. Furthermore, the raw materials for these polymers are obtained from petroleum, a limited, nonrenewable resource. To reduce the demand for landfill space and the consumption of limited petroleum reserves, the recycling of polymers has become a subject of concern. One of the problems faced in recycling polymers is the great variety of polymers in use. To help sort wastes by type of polymer, most disposable polymeric goods are labeled with a recycling code: three arrows around a number above the polymer's acronym. These are intended to help consumers separate the waste polymers according to type before disposing of them. What can be Recycled? Do NOT Recycle This Plastic 1. Automotive Product Plastic Code Number Recyclable Containers Soda Bottles Water Bottles Juice Bottles Cooking Oil Bottles Soap/Detergent Bottles Shampoo Bottles Clear Liquor Bottles Food Jars (Peanut Butter etc.) Degradable Polymers Plastic Code Number Containers Including: Recyclable Containers Motor Oil Bottles Milk Bottles Gasoline and Oil Additive Water Bottles Juice Bottles Cooking Oil Containers Washer Fluid Bottles Shampoo Bottles Anti-Freeze Containers Bottles 2. Brown Liquor Bottles 3. All Containers Marked With The Following Codes: Butter/Margarine Tubs Cottage Cheese Containers Ice Cream Containers Baby Wipe Containers Code Polymer Degradation of polymers can be accomplished by microorganisms or by photodegradation. Many polymers are 1 PETE polyethylene terphthalate made to degrade more readily by the addition of additives. 2 HDPE high density polyethylene Thermosetting polymers are an important target for these 3 V (PVC) polyvinyl chloride additives because they cannot be recycled. Photodegradable 4 LDPE low density polyethylene plastics can have an additive that is sensitive to ultraviolet 5 PP polypropylene light. Biodegradable plastics can have starch or cellulose 6 PS polystyrene incorporated into the resin at the time of manufacture. Microorganisms would consume the starch or cellulose and 7 OTHER all other the plastic would be broken down into small pieces. Photodegradation depends on light and oxygen, both of which are excluded in landfills. Biodegradation depends on moisture and that also is limited in landfills. Newspapers have been found in landfills relatively unchanged after 20 years. . 33 POLYMERS Down 1. This is another name for Styrofoam. 2. A milky white polymer from rubber trees. 3. This refers to the break down of polymer with light and oxygen. 4. These are a large and varied group of synthetic materials, which are processed by forming or molding into shape. 6. This polymer make up Spandex. 7. If all atoms in the monomers are incorporated into the polymer, the polymer is called a(n) ________ polymer. 9. Milk contains this biopolymer. 11. In this type of copolymer the monomeric units are distributed in a regular periodic fashion. 12. This is the abbreviation for the polymer designated by Plastic Code Number 1. 13. Latex heated with sulfur to make bridges between the long chain polymers in rubber. 15. This class of polymers can be elastically deformed a large amount when a force is applied to them and can return to their original shape when the force is released. 22. This type of copolymer is also called a random copolymer. Across 4. Common name of HDPE and LDPE that has the monomer CH2=CH2. 5. Polymers that make up living organisms such as amino acids, nucleic acids, and starch. 8. ~AAAAA-BBBBBBB~AAAAAAA~BBB~ is an example of this type of copolymer. 10. These are the “units” that are chained together to form polymers.(plural) 14. This category of polymers cannot be recycled because they just decompose if they are heated. 16. Trees secrete this resin which is used to make lacquer and shellac. 17. This polymer can form Fossilized tree sap. 18. This category of polymers may be melted and reshaped again and again. 19. This organism eats mulberry leaves and produces a polymer. 20. If some of the atoms of the monomers are released into small molecules, such as water, the polymer is called a(n) ________ polymer. 21. Dead wood and pulp from pine trees contain this 34 polymer that can be used to improve grip. 35 Name: __________________________________________ Polymer Activity We are going to investigate two types of polymers in this activity. There are many types of polymers – all with unique properties. Flubber Borate Solution: 1. 2. 3. 4. 5. Put 85 ml of warm water into 100/150 ml beaker Add 2.5 grams of powdered Borax Add 3 drops of food coloring Stir with a wooden stick Describe this solution: Glue Solution: 1. 2. 3. 4. Put 115 grams of white glue into the Rubber Maid Bowl provided Quickly add 90 ml of warm water to the bowl. Stir with a wooden stick Describe this solution: Pour the Borate solution into the Rubber Maid bowl containing the Glue Solution. Mix together using a wooden stick. When it is too thick to stir, use your hands to mix it. When most of the liquid is gone remove the Flubber from the bowl. Let any excess liquid drip off onto paper towels. Enjoy!! List 5 properties of this polymer: a. b. c. d. e. 36 Guar Gum Polymer “Slime” 1. 2. 3. 4. 5. 6. 7. Add 100 ml of distilled water to a plastic cup Add 1 drop of food coloring and stir Slowly and with constant stirring, add .75 grams of guar gum. YOU DO NOT WANT LARGE CLUMPS TO FORM Stir for 2 minutes – the solution will thicken slightly Add 5 ml of .1M sodium borate solution. Stir until the polymer gels. 8. List 5 properties of this polymer: a. b. c. d. e. 37 Name ___________________________________________________________ Model Review Draw and name each of the models: #1 #2 Name Name #3 #4 Name Name #5 #6 Name Name 38 #7 #8 Name Name #9 #10 Name Name #11 #12 Name Name 39 Name ___________________________________________________________ Model Review Draw and name each of the models: #1 #2 Name Name #3 #4 Name Name #5 #6 Name Name 40 #7 #8 Name Name #9 #10 Name Name #11 #12 Name Name 41