$$\begin{array}{c} H \\ | \\ H-C-H \\ | \\ H \end{array}$$

Question 1

Which of the following statements best describes why carbon is considered the backbone of life?

Accepted Answer

Carbon can form large, complex, and diverse molecules due to its ability to make four covalent bonds.

Question 2

What is the general formula for saturated alkanes?

Accepted Answer

$$C_nH_{2n+2}$$

Question 3

Which type of bond is formed by the head-on overlap of two $$sp^3$$ orbitals of carbon atoms?

Accepted Answer

$$\sigma$$ bond

Question 4

Which of the following is NOT a physical property of straight-chain alkanes?

Accepted Answer

They are soluble in water.

Question 5

How many constitutional isomers are possible for the alkane with the molecular formula $$C_5H_{12}$$?

Accepted Answer

3

Question 6

Which of the following best describes a tertiary carbon atom in an alkane?

Accepted Answer

A carbon atom connected to three other carbon atoms.

Question 7

Which of the following compounds is an example of a cycloalkane?

Accepted Answer

Cyclopentane

Question 8

What is the correct IUPAC name for the following structure: $$CH_3CH_2CH_2CH_3$$?

Accepted Answer

Butane

Question 9

Which of the following is a correct statement about constitutional isomers?

Accepted Answer

They have the same molecular formula but different connectivity.

Question 10

Which of the following is the correct Latin root for a hydrocarbon with 8 carbon atoms?

Accepted Answer

oct

Question 11

A molecule with the formula $$C_4H_{10}$$ can exist as which of the following pairs of constitutional isomers?

Accepted Answer

Butane and isobutane

Question 12

Which of the following statements about the polarity of alkanes is correct?

Accepted Answer

Alkanes are nonpolar due to the similar electronegativity of carbon and hydrogen.

Question 13

Which of the following is the correct IUPAC name for a molecule with a four-carbon straight chain and a methyl group attached to the second carbon?

Accepted Answer

2-methylbutane

Question 14

What is the correct order of increasing bond strength for carbon-carbon bonds?

Accepted Answer

Single \u003c Double \u003c Triple

Question 15

Which of the following is NOT a common partner atom that bonds with carbon in organic molecules?

Accepted Answer

Sulfur

Question 16

Which of the following is the correct Lewis structure for methane ($$CH_4$$)?

Accepted Answer

$$\begin{array}{c} H \ | \ H-C-H \ | \ H \end{array}$$

Question 17

Which of the following is the correct classification for benzene?

Accepted Answer

Aromatic compound

Question 18

Which of the following statements about cycloalkanes is correct?

Accepted Answer

Cycloalkanes have a compact shape and are nonpolar.

Question 19

Which of the following is the correct IUPAC name for a molecule with a three-carbon chain and no branches?

Accepted Answer

Propane

Question 20

Which of the following is the correct formula for an alkene with four carbon atoms?

Accepted Answer

$$C_4H_8$$

Organic Compounds and Structures: Foundations of Organic Chemistry

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