SCIN131-Introduction to Chemistry-APUS-Lesson 7 Assignment

Part 1 of 3 - 20.0/ 20.0 Points Question 1 of 12 4.0/ 4.0 Points Based on the molecular formulas shown below, which compound shown below would NOT be classified as a noncyclical alkane?  A.C3H8  B.C4H10  C.C12H24  D.C5H12  E.C9H20 Answer Key: C Question 2 of 12 4.0/ 4.0 Points Which type of hydrocarbon is classified as being saturated?  A.alkynes  B.alkenes  C.alkanes  D.all of these  E.none of the above Answer Key: C Question 3 of 12 4.0/ 4.0 Points What will be the major product(s) when C2H4 undergoes an addition reaction with Cl2?  A.C2H3Cl2  B.C2H4Cl2  C.C2H3Cl  D.all of the above  E.none of the above Answer Key: B Question 4 of 12 4.0/ 4.0 Points What are the product(s) of: C2H6 + Cl2 ->  A.C2H5Cl + HCl  B.C2H6Cl2  C.C2H4Cl2 + H2  D.all of the above  E.none of the above Answer Key: A Question 5 of 12 4.0/ 4.0 Points What is the formula for propene?  A.C3H4  B.C3H3  C.C3H8  D.C3H6  E.none of the above Answer Key: D
Part 2 of 3 - 20.0/ 20.0 Points Question 6 of 12 4.0/ 4.0 Points All of the carbohydrates below are hexoses EXCEPT:  A.fructose.  B.galactose.  C.glucose.  D.both A and B  E.Glucose, fructose and galactose are all hexoses. Answer Key: E Question 7 of 12 4.0/ 4.0 Points The human genome project showed that humans have approximately ________ genes.  A.46  B.3 Million  C.36,000  D.20,000  E.none of the above Answer Key: D Question 8 of 12 4.0/ 4.0 Points The complementary base sequence to GTAGCT is:  A.GCAGTA.  B.AGTCGA.  C.ACGATC.  D.CATCGA.  E.none of the above Answer Key: D Question 9 of 12 4.0/ 4.0 Points Which factor causes the main difference in chemical properties between different amino acids?  A.carboxylic acid group  B.R group (side chain)  C.molecular weight  D.amine group  E.none of the above Answer Key: B Question 10 of 12 4.0/ 4.0 Points An example of a polysaccharide is:  A.glucose.  B.sucrose.  C.cellulose.  D.glycogen.  E.both C and D Answer Key: E
Part 3 of 3 - 10.0/ 10.0 Points Question 11 of 12 5.0/ 5.0 Points Provide an example of a common ether and its primary use. Example of an ether is Diethyl ether It is a common ether and used as an early anaesthetic. It is also used as starting fluid for diesel engines and as a refrigerant and in the manufacture of smokeless gunpowder, along with use in perfumery. Question 12 of 12 5.0/ 5.0 Points Explain why wet hair placed in curlers that is allowed to dry tends to retain the shape of the curl. Hair is made up of keratin proteins, natural oils, and hydrogen bonds. These ingredients work together to give hair its natural shape, color, etc. When we use a curling iron, the heat it produces breaks down hair’s hydrogen bonds, stripping away its natural oils and proteins. The heat changes hair’s texture, allowing to mold it to shape the curler have. The shape of a curler helps to mold hair into the shape of curler. As we hold hair in a particular shape for a few seconds, the bonds begin to reform into the new shape. The bonds will tend to hold hair in its new shape until they’re broken down again.
Part 1 of 3 - 20.0/ 20.0 Points Question 1 of 12 4.0/ 4.0 Points What is the molecular geometry of the red carbon atom in the following compound,  A.bent  B.linear  C.trigonal planar  D.tetrahedral  E.none of the above Answer Key: B Question 2 of 12 4.0/ 4.0 Points A straight chain saturated hydrocarbon has eight carbon atoms. Its molecular formula is  A.C8H18  B.C8H16  C.C8H14.  D.C8H24.  E.none of the above Answer Key: A Question 3 of 12 4.0/ 4.0 Points The compound named 2,3-dimethylpentane would have how many total number of carbons?  A.5  B.3  C.7  D.8  E.none of the above Answer Key: C Question 4 of 12 4.0/ 4.0 Points Which of the following is an example of a polymer?  A.Plexiglass  B.Protein  C.Nylon  D.DNA  E.all of the above Answer Key: E Question 5 of 12 4.0/ 4.0 Points Based on the molecular formulas shown below, which compound shown below would NOT be classified as a noncyclical alkane?  A.C3H8  B.C4H10  C.C12H24  D.C5H12  E.C9H20 Answer Key: C
Part 2 of 3 - 16.0/ 20.0 Points Question 6 of 12 4.0/ 4.0 Points A seven-carbon sugar is known as  A.sevose.  B.hexose.  C.tetrose.  D.heptose.  E.none of the above Answer Key: D Question 7 of 12 0.0/ 4.0 Points Which type of structure is maintained by interaction between R-groups on amino acids that are separated by long distances on the same chain?  A.Primary Structure  B.Secondary Structure  C.Tertiary Structure  D.Quaternary Structure  E.Pental Structure Answer Key: C Question 8 of 12 4.0/ 4.0 Points All of the following are usable forms of carbohydrates by humans EXCEPT:  A.sucrose.  B.glucose.  C.glycogen.  D.cellulose.  E.both C and D Answer Key: D Question 9 of 12 4.0/ 4.0 Points An example of a monosaccharide is ________.  A.glycogen  B.cellulose  C.glucose  D.sucrose  E.both C and D Answer Key: C Question 10 of 12 4.0/ 4.0 Points An example of a disaccharide is  A.sucrose  B.glucose  C.cellulose  D.glycogen  E.both C and D Answer Key: A
Part 3 of 3 - 10.0/ 10.0 Points Question 11 of 12 5.0/ 5.0 Points Provide an example of a common amine and where you might find it. Amines are organic compounds and functional groups that contain a basic nitrogen atom with a lone pair. Amines are derivatives of ammonia, Examples include amines used as dyes like aniline etc.. some are used as drugs like chlorpheniramine Chlorpheniramine is an antihistamine the helps to relief allergic disorders due to cold, hay fever, itchy skin, insect bites and stings. Question 12 of 12 5.0/ 5.0 Points Provide an example of a common ether and its primary use. Ether is a compound with two R groups attacched to a O atom. Diethyl ether is a common low boiling solvent and an early anaesthetic. Used as starting fluid for diesel engines. Also used as a refrigerant and in the manufacture of smokeless gunpowder, along with use in perfumery.
Question 1 of 12 4.0/ 4.0 Points Which of the following best describes the compound below? C5H10  A.alkane  B.alkene  C.alkyne  D.benzene Answer Key: B Feedback: Good. Alkanes are discussed in 18.5
Question 2 of 12 4.0/ 4.0 Points We use polymers every day and never really realize it. Polyethylene is used in many drink containers and PVC pipe is a polymer as well. Which of the following is NOT true regarding polymers?  A.Monomer units link together and do not eliminate any atoms or groups when forming a polymer.  B.During condensation polymerization an atom or group is eliminated.  C.Nylon 6,6 and polyurethane are examples of copolymers.  D.Copolymers contain more than one kind of polymer. Answer Key: C Feedback: Good. Polymers are discussed in 18.17
Question 3 of 12 0.0/ 4.0 Points Suffixes are commonly used in organic chemistry and can tell us a lot about the compound. What can we infer from the name "pentanal?"  A.ketone.  B.ether.  C.ester.  D.aldehyde Answer Key: D Feedback: This type of chemicals is discussedin 18.15
Question 4 of 12 4.0/ 4.0 Points Name the following compound:  Drawing it out will help you! CH3CH2CH2CCH  A.1-pentene  B.1-pentyne  C.1-butene  D.1-butyne  E.none of the above Answer Key: B Feedback: Good. Alkynes are discussed in 18.8
Question 5 of 12 4.0/ 4.0 Points Which of the following compounds would not be considered a polymer?  A.Plexiglass  B.Protein  C.Nylon  D.DNA  E.all of these are polymers Answer Key: E Feedback: Good polymers are discussed in 18.17
Part 2 of 3 -	16.0/ 20.0 Points

Question 6 of 12 4.0/ 4.0 Points DNA has a double helix structure. This structure is held together with what?  A.ester linkages.  B.disulfide bonds.  C.hydrogen bonds.  D.peptide bonds.  E.covalent bonds. Answer Key: C Feedback: Good. DNA structure is discussed in 19.8
Question 7 of 12 0.0/ 4.0 Points Which of the following would not fall under the classification of lipids?Which of the following would not fall under the classification of lipids?  A.fats.  B.fatty acids.  C.oils.  D.amino acids.  E.All of the above are lipids. Answer Key: D, D Feedback: Lipids are discussed in 19.4
Question 8 of 12 4.0/ 4.0 Points G-Protein Coupled Receptors make up more than 800 protein receptors in our bodies, including the receptors where asthma and pain medications are active.  These receptors typically have 7 transmembrane alpha helices that span the lipid bilayer.  What type of structure describes their transmembrane regions?  A.Pental structure  B.Primary structure  C.Tertiary structure  D.Secondary structure  E.Quaternary structure Answer Key: D Feedback: Good. Amino acids are discussed in 19.6
Question 9 of 12 4.0/ 4.0 Points In terms of biochemistry, what is a codon?  A.a series of three phosphates that specifies one of the twenty amino acids.  B.a series of three bases that specifies one of the twenty amino acids.  C.a series of three sugars that specifies one of the twenty amino acids.  D.a series of three proteins that specify one of the twenty amino acids.  E.none of the above Answer Key: B Feedback: Good. Protein synthesis is discussed in 19.8
Question 10 of 12 4.0/ 4.0 Points The 20 amino acids are very similar in structure. Which component gives them different properties?  A.carboxylic acid group  B.amine group  C.molecular weight  D.R group (side chain) Answer Key: D Feedback: Good. Amino acids are discussed in 19.6
Part 3 of 3 -	4.0/ 10.0 Points

Question 11 of 12 4.0/ 5.0 Points For each compound below, write the chemical formula and the structural formula. You must show your work and discuss/explain how you reached your answer to receive credit.  (a) 2-heptene , (b) 1-pentene, (c) 3-octyne (a) 2-heptene : C7H14 Hept represents 7 and ene doubles 14, bonding at 2nd C (b) 1-pentene, C5H10,Pent represents 5 and ene doubles 10, bonding at 1 C (c) 3-octyne : C8H14 Oct represents 8 and yne represents 2n-2 = 16-2 = 14 Feedback: Organic chemistry is discussed in Ch. 18 Comment: You are on the right track, but I think you left a few things out. Hept represents 7 carbons, the -ene means there's at least one double bond, and the 2 tells you the double bond occurs from carbon 2 to 3.  (a) C7H14. H3C-CH=CH-CH2-CH2-CH2-CH3  (b) C5H10 H2C=CH-CH2-CH2-CH3  (c) C8H14 H3C-CH2-C≡C-CH2-CH2-CH2-CH3

Question 12 of 12 0.0/ 5.0 Points Explain the terms "organic" and "inorganic" in respect to their usage in classifying compounds.   Historically, what was the difference between organic and inorganic?  How has that changed today in terms of compounds?  Include the terminology and content from this lesson and give examples as necessary. By the end of the eighteenth century, chemists had divided compounds into two broad categories as organic and inorganic. Organic compounds came from living things.Sugar—obtained from sugarcane or the sugar beet—is an example of an organic compound. Inorganic compounds came from Earth. Salt—mined from the ground or extracted from the ocean—is an example of an inorganic compound. Early chemists realized that organic and inorganic compounds are different in their properties. Organic compounds are easily decomposable. Sugar easily decomposes into carbon and water when heated. Inorganic compounds are more difficult to decompose. Salt must be heated to very high temperatures before it decomposes.  Organic compounds are difficult to synthesize in the laboratory.  Many inorganic compounds could be easily synthesized, but organic compounds could not. The origin and properties of organic compounds led early chemists to postulate that organic compounds are unique to living organisms. They postulated that living organisms employed a vital force—a mystical or supernatural power—that allowed them to produce organic compounds. They thought it impossible to produce an organic compound outside of a living organism because the vital force is not present. This belief—which became known as vitalism—was thought to explain why no chemist had succeeded in synthesizing an organic compound in the laboratory.     Feedback: Organic chemistry is discussed in Ch. 18 Comment: This was copied from the textbook directly and not put in the students' own words. That is plagiarism and no credit will be awarded.