Question 1

Which of the following best describes the functional group present in an amide, as shown in the provided tables?

Accepted Answer

A carbonyl group ($$C=O) $$bonded to a nitrogen atom

Question 2

Which of the following is the correct molecular formula for octane, based on the table of straight-chain alkanes?

Accepted Answer

$$C_8H_{18}$$

Question 3

A molecule with the condensed structure $$CH_3CH_2CH_2CH_2CH_3 is $$named:

Accepted Answer

Pentane

Question 4

Which Greek prefix is used to indicate six atoms in a binary covalent compound?

Accepted Answer

hexa-

Question 5

Which of the following best describes the reaction shown in the energy diagram labeled 'Reaction I'?

Accepted Answer

Exergonic, because the products have lower free energy than the reactants

Question 6

Which of the following is a structural isomer of hexane?

Accepted Answer

2-methylpentane

Question 7

Which functional group is present in all monosaccharides shown in the Fischer projection chart?

Accepted Answer

Aldehyde or ketone

Question 8

What is the product when an aldehyde is reduced?

Accepted Answer

A primary alcohol

Question 9

Which of the following best describes the difference between D-glucose and D-mannose as shown in the Fischer projections?

Accepted Answer

They are epimers, differing at only one chiral carbon

Question 10

Which of the following is true about the ester functional group, as shown in the functional group tables?

Accepted Answer

It contains a carbonyl group ($$C=O) $$bonded to an oxygen atom that is also bonded to another carbon

Question 11

Which of the following best describes the reaction type when two amino acids join to form a peptide bond?

Accepted Answer

Condensation (dehydration synthesis)

Question 12

Which of the following is the correct condensed structure for 2,3-dimethylbutane?

Accepted Answer

$$CH_3CH(CH_3$)CH(CH_3$)CH_3$

Question 13

Which of the following is NOT a property of a saturated hydrocarbon?

Accepted Answer

Contains at least one double or triple bond

Question 14

Which of the following best describes the functional group present in a carboxylic acid?

Accepted Answer

A carbonyl group ($$C=O) $$bonded to a hydroxyl group ($$-OH)$$

Question 15

Which of the following best describes the difference between an aldehyde and a ketone?

Accepted Answer

An aldehyde has a carbonyl group at the end of a carbon chain; a ketone has it within the chain

Question 16

Which of the following is the correct name for a molecule with the formula $$C_7H_{16}$$?

Accepted Answer

Heptane

Question 17

Which of the following best describes the product of hydrolyzing an ester group in a lipid?

Accepted Answer

A carboxylic acid and an alcohol

Question 18

Which of the following is the correct Greek prefix for four atoms in a binary covalent compound?

Accepted Answer

tetra-

Question 19

Which of the following best describes the difference between D-ribose and D-xylose as shown in the Fischer projections?

Accepted Answer

They differ in the configuration at one chiral carbon

Question 20

Which of the following is the correct skeletal structure for nonane?

Accepted Answer

A zig-zag line with nine carbon atoms

GOB Chemistry Study Guide: Organic Compounds, Reactions, and Functional Groups

Study Guide - Practice Questions