Revision Sheet Final Exam Term
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1 Revision Sheet Final Exam Term Name: Subject: Chemistry Grade: 12 A, B, C Required Materials: Chapter: 22 Section: 1,2,3,4 (Textbook pg ) Chapter: 23 Section: 1,2 (Textbook pg )
2 Student s name: I can do it Class/Section: 12 / Subject: Chemistry Date: NGSS: HS-PS1.A, HS-PS3.D Individual Work Objective: 1. to describe the types of hydrocarbons 2. to explain the types of molecules SHORT ANSWER Answer the following questions in the space provided. 1. Proteins are polypeptides made of many (a) lipids. (b) carbohydrates. (c) starches. (d) amino acids. 2. The amino acid sequence of a polypeptide chain is its (a) primary structure. (b) secondary structure. (c) tertiary structure. (d) quaternary structure. 3. The secondary structure of a protein that is shaped like a coil, with hydrogen bonds that form along a single segment of peptide, is (a) a looped structure. (b) the active site. (c) an alpha helix. (d) a beta pleated sheet. 4. According to the text, which amino acid(s) contains a side chain a. in which molecules form covalent disulfide bridges with each other? b. that is hydrophobic? c. that forms hydrogen bonds? d. that is basic?
3 5. Lactose and sucrose are both examples of (a) lipids. (b) monosaccharides. (c) disaccharides. (d) proteins. 6. Carbohydrates made up of long chains of glucose units are called (a) monosaccharides. (b) disaccharides. (c) polysaccharides. (d) simple sugars. 7. The disaccharide that is commonly known as table sugar is (a) lactose. (b) fructose. (c) sucrose. (d) maltose. 8. The polysaccharide that plants use for storing energy is (a) starch. (b) glycerol. (c) cellulose. (d) glycogen. 9. Many animals store carbohydrates in the form of (a) starch. (b) glycogen. (c) cellulose. (d) glycerol. 10. Which class of biomolecules includes fats, oils, waxes, steroids, and cholesterol? (a) starches (b) monosaccharides (c) disaccharides (d) lipids 11. Relate the structure of carbohydrates to their role in biological systems.
4 12. What is a condensation reaction, what is a hydrolysis reaction, and how do they differ? 13. Why can cows digest cellulose, while humans cannot? 14. Describe how phospholipids are arranged in the cell membrane. 15. Match the reaction type on the left to its description on the right. substitution addition condensation elimination (a) An atom or molecule is added to an unsaturated molecule, increasing the saturation of the molecule. (b) A simple molecule is removed from adjacent atoms of a larger molecule. (c) One or more atoms replace another atom or group of atoms in a molecule. (d) Two molecules or parts of the same molecule combine. 16. Two molecules of glucose, C 6 H 12 O 6, undergo a condensation reaction to form one molecule of sucrose, C 12 H 22 O 11. a. How many molecules of water are formed during this condensation reaction? b. Write a balanced chemical equation for this condensation reaction.
5 17. Addition reactions with halogens tend to proceed rapidly and easily, with the two halogen atoms bonding to the carbon atoms connected by the multiple bond. Thus, only one isomeric product forms. a. Write an equation showing the structural formulas for the reaction of Br2 with 1-butene. b. Name the product. 18. Identify each of the following substances as either a natural or a synthetic polymer. a. cellulose b. nylon c. proteins 19. Match the structural formulas on the right to the family name on the left. 1. aldehyde 2.ketone 3.carboxylic acid 4.amine 5.ester 6.alkene (a) (b) (d) (e) (c) (f)
6 20. What is the functional group in glycerol? Explain how glycerol functions in skin care products. 21. List the halogen atoms found in alkyl halides in order of increasing atomic mass. 22. State the difference between aldehydes and ketones. 23. Write the IUPAC name for the following structural formulas: a. b. c.
7 d. 24. Draw the structural formula for each of the following compounds: a. 3,4-diethyl-2-methy-1-hexene b. 1-ethyl-2-methylbenzene 25. Name two types of carbon-containing molecules that are not organic. 26. Carbon atoms form bonds readily with atoms of (a) elements other than carbon.(c) both carbon and other elements. (b) carbon only. (d) only neutral elements 27. Define Geometrical isomers. Degree Enhance &Comments Target Value Respect Keep your school clean! Done By: Mrs Madeeha Mubashar
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