Question 1

Which of the following statements best distinguishes organic compounds from inorganic compounds?

Accepted Answer

Organic compounds always contain carbon and hydrogen, while inorganic compounds may or may not contain carbon.

Question 2

Which of the following is the correct IUPAC name for the compound with the condensed structural formula $$CH_3$$-$$CH_2$$-$$CH_2$$-$$CH_2$$-$$CH_3$$?

Accepted Answer

Pentane

Question 3

What is the molecular formula for heptane?

Accepted Answer

$$C_7H_{16}$$

Question 4

Which of the following properties is typical of organic compounds?

Accepted Answer

Burns vigorously in air

Question 5

Which of the following is a structural isomer of $$C_4H_{10}$$?

Accepted Answer

$$CH_3CH(CH_3$)CH_3$

Question 6

What is the correct IUPAC name for the following compound?

$$CH_3$$-$$CH_2-CH(Br$$)-$$CH_2$$-$$CH_3$$

Accepted Answer

3-bromopentane

Question 7

Which of the following best describes the geometry around the carbon atom in methane ($$CH_4$$)?

Accepted Answer

Tetrahedral

Question 8

Which of the following is the correct balanced equation for the complete combustion of propane ($$C_3H_8$$)?

Accepted Answer

$$C_3H_8 + 5O_2 \rightarrow 3CO_2 + 4H_2O$$

Question 9

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

Accepted Answer

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

Question 10

Which of the following is the correct IUPAC name for the compound with the following structure?

$$CH_3$$-$$CH_2-CH=CH$$-$$CH_3$$

Accepted Answer

2-pentene

Question 11

Which of the following functional groups is present in an aldehyde?

Accepted Answer

$$-CHO$$

Question 12

A compound with the formula $$CH_3CH_2CH_2OH is $$classified as which of the following?

Accepted Answer

Alcohol

Question 13

Which of the following best describes the difference between alkanes, alkenes, and alkynes?

Accepted Answer

Alkanes have only single bonds, alkenes have at least one double bond, and alkynes have at least one triple bond.

Question 14

What is the correct IUPAC name for the following compound?

$$CH_3CH_2C \equiv $$CCH_3$$

Accepted Answer

2-pentyne

Question 15

Which of the following is a property of an inorganic compound such as sodium chloride ($$NaCl$$)?

Accepted Answer

Usually soluble in water

Question 16

Which of the following is the correct IUPAC name for a compound with a six-carbon chain, a bromo group on carbon 4, and methyl groups on carbons 2 and 4?

Accepted Answer

4-bromo-2,4-dimethylhexane

Question 17

Which of the following best describes a polymer?

Accepted Answer

A long-chain molecule made of repeating units called monomers

Question 18

Which of the following is the correct IUPAC name for the compound with the following structure?

$$CH_3CH_2CH_2CH_2CH_2CH_3$$

Accepted Answer

Hexane

Question 19

Which of the following is a correct statement about isomers?

Accepted Answer

Isomers have the same molecular formula but different structural arrangements.

Question 20

Which of the following functional groups is present in an ester?

Accepted Answer

$$-COO-$$

chem exam 4 (ch 17)-Organic Chemistry: Alkanes, Alkenes, Alkynes, and Functional Groups

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