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NAME _________________________________________ DATE ______________________________ BLOCK ____ Isomers and Functional Groups 1. What is an isomer? ________________________________________________________________________ ________________________________________________________________________ 2. 3. Draw the following cis and trans isomers. a) trans-3,4-dichloro- 3-hexene c) trans-2-octene b) cis-2,3-dibromo-2-butene d) cis-1,1,1,7,7,7-hexachloro-3heptene Name the following as “cis” or “trans” isomers. a) C–C C–C \ / C=C b) C | C–C–C–C / | C=C C / C VERSION: June 7, 2002 c) C–C C \ / C=C \ C–C–C–C d) C C–C \ / C=C C C / \ | | C–C C–C–C–C–C–C | C 2 4. 5. CHEMISTRY 11 Which of the following molecules can exhibit cis-trans isomerism? a) 3-hexene d) 2,5-dimethyloctane b) 4-heptyne e) 1-butene c) 2-octene f) 3-ethyl-3-hexene What is a functional group? ________________________________________________________________________ ________________________________________________________________________ 6. Draw the following compounds a) 3-methyl-1-pentanol e) methyl propyl ether b) 2,2-dichloro-3-methyl-4-nonanol f) ethyl butyl amine c) 5,5-dimethyl-3-hexanone g) 4,4-dimethylpentanoic acid d) 2-methylpentanal h) methyl butanoate UNIT X: ORGANIC CHEMISTRY — ISOMERS AND FUNCTIONAL GROUPS 7. 3 Circle the functional groups which exist in each of the following molecules and label each group as one of: double bond triple bond aromatic ring halide alcohol aldehyde ketone ether amine amide carboxylic acid ester a) Br | Br–C–C–C–C–C | | Br C f) C–OH | C–O / \ O=C C–OC / O=C O CO–C || | H–C–C–C–C–COO–C–C | b) OH | C–C–C–C–C–OH | OH g) c) C–C–C–COO–C–C–C | C h) O || –C–OH H2N– d) C | C–C–CO–C–C | | C C i) e) –COOH j) C–CONH2 | C–COHN2 HO | –COOH / HO 8. Name the following compounds. O || C / \C | C \ –O–C 4 CHEMISTRY 11 a) C–C–C–C–C–C–O–C–C f) O || / C b) I–C–C = C–C–I | C \ C–C–C g) F C O | | || C–C–C–C–C–C–C–C–COH | | | C C C–C–C c) O || –C–OH h) C C O | | || C–C–C–C–C–C–C–C–C | | C C–C–C d) O || C–C–C–C–C–C–O–C–C–C i) C–C–C–C H \ / N | C–C–C e) F O | || C–C–C–C–C–CH | | F C j) OH | | C | C–C–C