CHEM 1020 FINAL TEST QUESTIONS WITH COMPLETE SOLUTIONS

CHEM 1020 FINAL TEST QUESTIONS WITH COMPLETE SOLUTIONS (exam 1) Three physical properties shown below beside different alkane series. Which of the series is (are) lister on the order of increase (lowest to highest) for the corresponding property? a. density: C4H10 C5H12 C8H18 b. melting point: C8H18 C5H12 C4H10 c. biking point: C5H12 C4H10 C8H18 d. all are correctly ranked - ANSWER A; density, melting poing, and boiling point increase as chain length increases (exam 1) Draw the structural formula for 1-bromo-2,2-dimethylpropane. - ANSWER look at question 2 on exam 1 for answer (exam 1) What is a major difference between inorganic and organic compounds? a. there are many more inorganic compounds than organic compounds b. organic compounds contain carbon; few inorganic compounds do c. organic compounds are never ionic d. organic compounds tend to be more polar than inorganic compounds - ANSWER B (exam 1) When the compound 1,2-dimethylcyclopropane has CH3 on both sides pointing in the same direction, the compound is? a. cis b. trans c. either cis or trans d. neither cir nor trans - ANSWER A; only in a 3d shape can they be cis or trans (exam 1) Isomers always have the same molecular formula. a. true b. false - ANSWER A; but different arrangements (exam 1) What type of hybridization is associated with alkyne bonding? a. sp b. sp2 c. sp3 d. sp4 - ANSWER A; sp2 - alkene, sp3 - alkane (exam 1) What conditions must be used to carry out the following reaction? 2CH3CH2CH2-OH --- CH3CH2-O-CH2CH3 + H2O a. H2SO4, 180C b. H2SO4, 140C c. HCl d. NaOH - ANSWER B; 140 degrees-ether, 180 degrees-alkane (exam 1) Which of the following will react with Tollens' reagent? a. aldehyde b. ketone c. alcohol - ANSWER A (exam 1) Which of the following compounds would you expect to be foul smelling? a. CH3CH2CH2OH b. CH3CH2CH2SH c. CH3CH2CH2CH3 d. CH3CH2CH2CHO - ANSWER B; SH means thiol-thiols are smelly (exam 1) Dehydration of an alcohol will produce a(n) ----. a. alcohol b. ether c. alkene d. carbonyl - ANSWER C (exam 2) One feature of the fluid mosaic model of membrane structure is called the ---- a. lipid bilayer b. hydrophilic sheet c. pleated sheet d. microfilament - ANSWER A (exam 2) Which of the following correctly shows what is produced as a result of increased oxidation of carbon? a. alcohol alkene ketone aldehyde b. alcohol aldehyde ketone carboxylic acid c. alkene alcohol aldehyde carboxylic acid d. ketone alcohol carboxylic acid aldehyde - ANSWER C (exam 2) A polysaccharide containing beta(1--4) lingages is ---- a. amylopectin b. amylose c. cellulose d. glycogen - ANSWER C (exam 2) The products of hydrolysis of a wax include a fatty acid and ---- a. a long chain alcohol b. an ester c. glycerol d. more than one response is correct - ANSWER A (exam 2) a functional group present in fats is a(n) ---- a. aldehyde b. carboxylic acid c. ester d. alcohol - ANSWER C (worksheet 1) list the following prefixes for 1 - 10 - ANSWER meth, eth, prop, but, pent, hex, kept, oct, non, dec (worksheet 7) Where will you find a -CHO group? - ANSWER aldehyde (worksheet 7) Which OH group determines whether a sugar is D or L? - ANSWER the penultimate carbon (worksheet 7) What is a chiral carbon? - ANSWER C with 4 different things attached to it (worksheet 7) What is an enantiomer? - ANSWER a mirror image (worksheet 7) What is an anomeric carbon? - ANSWER carbon attached to 2 oxygens (worksheet 7) Which direction do alpha and beta point? - ANSWER alpha - down beta - batter UP (exam 2 review) Which compound in the following pair would you expect to have the higher boiling point? a. Acetic acid or 1-propanol b. Propanoic acid or butanone c. Acetic acid or butyric acid - ANSWER a. acetic acid b. propanoic acid c. butyric acid