Test bank for introduction to organic chemistry 5th edition by brown

Test Bank for Introduction to Organic Chemistry 5th Edition by Brown Full file at https://TestbankDirect.eu/ Chapter - Covalent Bonding and Shapes of Molecules Package Title: Brown/Poon Test Bank Course Title: Brown/Poon 5e Chapter Number: Question type: Multiple Choice Section 1.1 Difficulty Level: Easy Which is the electronic configuration that describes Mg2+? a) 1s2, 2s2 b) 1s2, 2s2, 2p6 c) 1s2, 2s2, 2p6, 3s2 d) 1s2, 2s2, 2p6, 3s2, 3p6 Answer: b Section 1.1 Difficulty Level: Easy Which is the electronic configuration that describes a neutral carbon atom? a) 1s2, 2s2, 2p5 b) 1s2, 2s2, 2p6, 3s2 c) 1s2, 2s2, 2p2 d) 1s2, 2s2, 2p6 Answer: c Section 1.1 Difficulty Level: Easy Which atom is described by the electronic configuration 1s22s22p63s23p3? a) Mg b) Al c) Si d) P Answer: d Section 1.1 Difficulty Level: Easy Which atom is described by the electron configuration 1s22s22p63s23p5? a) S b) Se c) Cl d) Br Answer: c Full file at https://TestbankDirect.eu/ Test Bank for Introduction to Organic Chemistry 5th Edition by Brown Full file at https://TestbankDirect.eu/ Chapter - Covalent Bonding and Shapes of Molecules Section 1.1 Difficulty Level: Easy A neutral carbon has how many valence electrons? a) b) c) d) Answer: b Section 1.1 Difficulty Level: Easy A neutral oxygen has how many valence electrons? a) b) c) d) Answer: c Section 1.1 Difficulty Level: Easy A neutral nitrogen has how many valence electrons? a) b) c) d) Answer: b Section 1.1 Difficulty Level: Medium Which statement about orbitals is false? a) Orbitals are regions of space where electrons are found b) Orbitals may contain up to two electrons each c) Orbitals are filled in order of decreasing energy d) Orbitals of equivalent energy are half filled before adding two electrons to any one of them Answer: c Full file at https://TestbankDirect.eu/ Test Bank for Introduction to Organic Chemistry 5th Edition by Brown Full file at https://TestbankDirect.eu/ Chapter - Covalent Bonding and Shapes of Molecules Section 1.2 Difficulty Level: Easy Which atom is described by the Lewis structure A ? a) C b) P c) Se d) I Answer: c Section 1.2 Difficulty Level: Easy 10 Which atom is described by the Lewis structure A ? a) C b) P c) Se d) I Answer: a Section 1.2 Difficulty Level: Medium 11 Which Lewis structures are correct? HINT: Count the electrons around each atom in step and check, whether the charges (or the absence of them) are correct in step H H C OH H H H C C O H H O O H H O C H I II III IV a) I b) II c) III d) IV Answer: a Full file at https://TestbankDirect.eu/ O H Test Bank for Introduction to Organic Chemistry 5th Edition by Brown Full file at https://TestbankDirect.eu/ Chapter - Covalent Bonding and Shapes of Molecules Sections 1.2, 1.7 Difficulty Level: Medium 12 Which Lewis structures are correct? HINT: Count the electrons around each atom in step and check, whether the charges (or the absence of them) are correct in step a) b) c) d) I, II II, IV III, IV I, III Answer: c Section 1.2 Difficulty Level: Medium 13 Which functional groups have correct Lewis structures? CH3 CH3 C O CH3 I CH3 H C O O CH3 C CH3 II III a) I, II b) II, III c) I, II, III d) I, III Answer: d Full file at https://TestbankDirect.eu/ O H Test Bank for Introduction to Organic Chemistry 5th Edition by Brown Full file at https://TestbankDirect.eu/ Chapter - Covalent Bonding and Shapes of Molecules Section 1.2 Difficulty Level: Hard 14 Which is the correct Lewis structure for acetic acid (CH3CO2H)? H O H C C H H O H I H O C C H H H O H C O O C H H O O H C C H II H III IV a) I b) II c) III d) IV Answer: d Section 1.3 Difficulty Level: Medium 15 Using the VSEPR model, predict which atoms have bond angles of about 120° O C CH3 H I CH3OH II CH2 CH2 NH4Cl III IV a) II, IV b) I, IV c) II, III d) I, III Answer: d Full file at https://TestbankDirect.eu/ H Test Bank for Introduction to Organic Chemistry 5th Edition by Brown Full file at https://TestbankDirect.eu/ Chapter - Covalent Bonding and Shapes of Molecules Section 1.3 Difficulty Level: Medium 16 Using the VSEPR model, predict which species have bond angles of about 109° HINT: Assume that the charges are correct Add the missing lone pairs before applying the VSEPR theory! NH3 I CO2 H2O II III H3O + O3 IV V a) I, III, IV b) II, III, V c) I, IV d) III, IV, V Answer: a Section 1.3 Difficulty Level: Medium 17: Which of the atoms that are marked with an arrow have tetrahedral geometry? O CH3 O OH C CH3 C H I a) b) c) d) H CH3 II CH3 III CH3 IV I, II II, IV I, IV, V II, II, V Answer: b Full file at https://TestbankDirect.eu/ N O CH3 C CH3 OH V Test Bank for Introduction to Organic Chemistry 5th Edition by Brown Full file at https://TestbankDirect.eu/ Chapter - Covalent Bonding and Shapes of Molecules Sections 1.3, 1.5 Difficulty Level: Medium 18: Which of the atoms that are marked with an arrow are sp2-hybridized? O H3C O OH C CH3 H C H I CH3 II CH3 III N O CH3 CH3 C CH3 OH IV V a) I, II, III b) I, II, IV c) I, III, V d) III, IV Answer: c Section 1.3 Difficulty Level: Hard - 19 According to VSEPR model, what is your prediction for the arrangement of electron pairs for CH3 ? a) linear b) tetrahedral c) bent d) trigonal Answer: b Section 1.4 Difficulty Level: Easy 20 Arrange the bonds in increasing order of ionic character (least first) C-C I Na-O II C-N III O-H IV a) III, I, IV, II, V b) V, III, I, II, IV c) I, V, III, IV, II d) I, III, V, IV, II Answer: d Full file at https://TestbankDirect.eu/ C-O V Test Bank for Introduction to Organic Chemistry 5th Edition by Brown Full file at https://TestbankDirect.eu/ Chapter - Covalent Bonding and Shapes of Molecules Section 1.4 Difficulty Level: Easy 21 Nitrogen has a negative formal charge in which of the following compounds? a) NaNH2 b) N2 c) NH4Cl d) HCN Answer: a Section 1.4 Difficulty Level: Easy 22 What is the formal charge of oxygen in H3O+? a) –1 b) c) +1 d) +2 Answer: c Section 1.4 Difficulty Level: Medium 23 Which compounds contain both covalent and ionic bonds? CH3OH I Na2CO3 II NH4Cl III NaCl IV a) I, II b) II, IV c) I, II, IV d) II, III Answer: d Section 1.4 Difficulty Level: Medium 24 Which of these molecules are polar? HINT: look for the presence of at least one polar covalent bond in these molecules! NH3 CO2 H2O I II III a) b) c) d) I, IV I, III II, III, IV III, IV, V Answer: b Full file at https://TestbankDirect.eu/ CH4 Br2 IV V Test Bank for Introduction to Organic Chemistry 5th Edition by Brown Full file at https://TestbankDirect.eu/ Chapter - Covalent Bonding and Shapes of Molecules Section 1.4 Difficulty Level: Medium 25 Which of these molecules are polar? HINT: look for the presence of at least one polar covalent bond in these molecules! O CH2 CH2 I C H H CH2Cl2 II CH3 IV III CH3 CH3OH V a) III, IV, V b) I, IV c) II, III, V d) I, III Answer: c Section 1.4 Difficulty Level: Medium 26 What is the formal charge of indicated carbon in the following molecule? O CH3 C H a) –2 b) –1 c) d) +1 Answer: b Full file at https://TestbankDirect.eu/ Test Bank for Introduction to Organic Chemistry 5th Edition by Brown Full file at https://TestbankDirect.eu/ Chapter - Covalent Bonding and Shapes of Molecules Section 1.4 Difficulty Level: Hard 27 Using the VSEPR model, predict which molecules have bond angles of about 109° F CH2 CH2 CH2 I O CH3 II N C O Cl III C CH3 F HO C Cl CH3 IV V CH3 a) II, IV b) I, II, III c) III, IV, V d) II, III, IV Answer: c Section 1.4 Difficulty Level: Hard 28 Using the VSEPR model, predict which molecules have bond angles of about 120° F CH2 CH2 I CH2 O II CH3 N C III O Cl C CH3 F CH3 IV V Answer: b Section 1.5 Difficulty Level: Medium 29 Which statement about contributing structures is false? a) All contributing structures must have the same number of valence electrons b) All contributing structures must obey the rules of covalent bonding c) The position of nuclei may change d) Third period atoms may have up to 18 electrons around them 10 Full file at https://TestbankDirect.eu/ C Cl a) I, II, IV b) I, II, III c) III, IV, V d) II, III, IV Answer: c HO CH3 Test Bank for Introduction to Organic Chemistry 5th Edition by Brown Full file at https://TestbankDirect.eu/ Chapter - Covalent Bonding and Shapes of Molecules Section 1.5 Difficulty Level: Hard 30 Which of the following are pairs of contributing structures? I O CH3 II CH2 III CH2 CH IV CH3 CH3 N CH2 OH CH2 O CH2 CH2 C N O O CH CH2 C O a) II, IV b) I, II, III c) III, IV d) II, III, ,IV Answer: c Section 1.6 Difficulty Level: Medium 31 The carbon has the correct orbital hybridization in which structures? CH2 O CH2 CH2 sp2 sp I II CH4 CH sp2 sp III IV a) II, IV, V b) II, III, IV c) I, II, III d) I, IV, V Answer: a Section 1.6 11 Full file at https://TestbankDirect.eu/ N O C sp V O Test Bank for Introduction to Organic Chemistry 5th Edition by Brown Full file at https://TestbankDirect.eu/ Chapter - Covalent Bonding and Shapes of Molecules Difficulty Level: Medium 32 What are the correct orbital hybridizations for carbon in the following species? HINT: Add a lone pair if the charge of the molecule suggests it! CH3 CH4 CH3 a) CH3+ is sp-hybridized b) CH3- is sp2-hybridized c) CH4 is sp2-hybridized d) CH3- is sp3-hybridized Answer: d Section 1.7 Difficulty Level: Easy 33 Which of the following compounds is a tertiary (3°) alcohol? CH3 CH3 CH OH CH3 C CH3 CH3 I II CH3 OH CH3 OH C CH2 CH3 III Answer: b Section 1.7 12 OH CH CH CH3 a) I b) II c) III d) IV Full file at https://TestbankDirect.eu/ CH3 CH3 IV Test Bank for Introduction to Organic Chemistry 5th Edition by Brown Full file at https://TestbankDirect.eu/ Chapter - Covalent Bonding and Shapes of Molecules Difficulty Level: Medium 34 Which compounds are classified correctly? HINT: Assume that the charges are correct Add the missing lone pairs! O O CH3 C CH3 H OH H C CH3 CH3 N CH3 alcohol aldehyde ketone amine I II III IV O CH3 C CH3 OH carboxylic acid V a) III, IV, V b) II, III, IV c) I, III, V d) I, III, IV Answer: a Section 1.7 Difficulty Level: Medium 35 Which of the three molecules testosterone, methadone and hydrocodone contains a ketone? testosterone methadone N OH O H H hydrocodone N H O O I II III a) I,II b) III c) II,III d) I, II, III Answer: d 13 Full file at https://TestbankDirect.eu/ O O Test Bank for Introduction to Organic Chemistry 5th Edition by Brown Full file at https://TestbankDirect.eu/ Chapter - Covalent Bonding and Shapes of Molecules Section 1.7 Difficulty Level: Medium 36 Which of the three molecules testosterone, methadone and hydrocodone contains an amine? testosterone methadone N OH O H H hydrocodone N H O O I II O O III a) I,II b) III c) II,III d) I, II, III Answer: c Section 1.7 Difficulty Level: Medium 37 Which of the three molecules testosterone, methadone and hydrocodone contains a hydroxyl group testosterone methadone N OH O H H hydrocodone N H O O I II III a) I b) I, III c) II,III d) I, II, III Answer: a Section 1.7 14 Full file at https://TestbankDirect.eu/ O O Test Bank for Introduction to Organic Chemistry 5th Edition by Brown Full file at https://TestbankDirect.eu/ Chapter - Covalent Bonding and Shapes of Molecules Difficulty Level: Medium 38 Which of the three molecules aspirin, paracetamol and ibuprofen contains a carboxyl group? aspirin paracetamol ibuprofen O OH O O HO O O N H OH I II III a) I b) I, III c) II,III d) I, II, III Answer: b Section 1.7 Difficulty Level: Hard 39 What is the correct structure for the aldehyde, which has the formula C4H8O? O OH CH3 CH CH CH2 CH3 C CH2 CH3 II I O CH3 CH2 CH2 CH III CH2 CH IV a) I b) II c) III d) IV Answer: c 15 Full file at https://TestbankDirect.eu/ CH2 O CH3 Test Bank for Introduction to Organic Chemistry 5th Edition by Brown Full file at https://TestbankDirect.eu/ Chapter - Covalent Bonding and Shapes of Molecules Question type: Fill-in-the-Blank Section 1.1 Difficulty Level: Easy 40 The spins of two electrons in the same orbital must be _ Answer: paired Section 1.1 Difficulty Level: Easy 41 Outer shell electrons are called _ electrons Answer: valence Section 1.1 Difficulty Level: Easy 42 is the number of valence electrons for a neutral sulfur atom Answer: Section 1.1 Difficulty Level: Easy 43 is the number of valence electrons for a neutral bromine atom Answer: Section 1.1 Difficulty Level: Easy 44 The tendency of an element to react such that it achieves a noble gas configuration is called the (Sec 1.1, EASY) Answer: octet rule Section 1.4 Difficulty Level: Medium 45 The most polar bond in the following molecule is F H OH H C C C H H H NH2 Answer: C-F 16 Full file at https://TestbankDirect.eu/ Test Bank for Introduction to Organic Chemistry 5th Edition by Brown Full file at https://TestbankDirect.eu/ Chapter - Covalent Bonding and Shapes of Molecules Section 1.4 Difficulty Level: Medium 46 A bond is characterized by the unequal sharing of electrons Answer: polar covalent Section 1.7 Difficulty Level: Medium 47 The following molecule contains the _ and functional groups O OH Answer: hydroxyl and carbonyl Section 1.7 Difficulty Level: Medium 48 The following molecule contains the _ and functional groups NH2 OH O Answer: primary amino and carboxyl Section 1.7 Difficulty Level: Medium 49 Functional groups undergo the same type of in whatever compound they are found Answer: reactions Section 1.7 Difficulty Level: Medium 50 are the basis for compound nomenclature Answer: Functional groups 17 Full file at https://TestbankDirect.eu/ Test Bank for Introduction to Organic Chemistry 5th Edition by Brown Full file at https://TestbankDirect.eu/ Chapter - Covalent Bonding and Shapes of Molecules Question type: True/False Section 1.1 Difficulty Level: Easy 51 Each shell can hold two electrons Answer: False Section 1.1 Difficulty Level: Medium 52 Orbitals make up the majority of the mass of an atom Answer: False Section 1.2 Difficulty Level: Easy 53 An neutral atom that has gained electrons is called an anion Answer: True Section 1.2 Difficulty Level: Easy 54 Ionic bonds are characterized by the unequal sharing of electrons Answer: False Section 1.2 Difficulty Level: Medium 55 Atoms of the group 7A elements react by losing an electron to achieve a noble gas configuration Answer: False Section 1.2 Difficulty Level: Medium 56 Atoms of the group 2A elements react by losing two electrons to achieve a noble gas configuration Answer: True Section 1.2 Difficulty Level: Medium 57 Carbon atoms usually react by gaining electrons to achieve a noble gas configuration Answer: False 18 Full file at https://TestbankDirect.eu/ Test Bank for Introduction to Organic Chemistry 5th Edition by Brown Full file at https://TestbankDirect.eu/ Chapter - Covalent Bonding and Shapes of Molecules Section 1.4 Difficulty Level: Medium 58 CH3CH2CH2CH2CH2OH is a polar molecule Answer: True Section 1.4 Difficulty Level: Medium 59 CH3ONa contains only polar covalent bonds Answer: False Section 1.7 Difficulty Level: Medium 60 The following molecule is an example of a secondary amine CH3 HC NH2 CH3 Answer: False 19 Full file at https://TestbankDirect.eu/