Question 1

Which of the following best describes why carbon forms four bonds in organic molecules?

Accepted Answer

Carbon has four electrons in its outermost shell, which it shares to achieve a stable octet.

Question 2

What is the correct formula for a compound formed between $$\mathrm{Ni$$^{2+}$$}$$ and $$\mathrm{P$$^{3-}$$}$$ ions?

Accepted Answer

$$\mathrm{Ni_3P_2}$$

Question 3

Which of the following molecules is non-polar, despite having polar bonds?

Accepted Answer

$$\mathrm{CO_2$}$$

Question 4

Which intermolecular force is present in all molecules, but is the only force in non-polar compounds?

Accepted Answer

London Dispersion Forces

Question 5

What is the IUPAC name for the following structure: $$\mathrm{CH_3CH_2CH(CH_3$)CH_2CH_3}$$?

Accepted Answer

3-Methylpentane

Question 6

Which of the following functional groups is present in the amino acid serine?

Accepted Answer

Alcohol, amine, and carboxylic acid

Question 7

Which of the following best explains why saturated fatty acids are less healthy than polyunsaturated fatty acids?

Accepted Answer

Saturated fatty acids pack more tightly, increasing the likelihood of forming clusters and clots.

Question 8

Which of the following is the correct balanced equation for the combustion of propane ($$\mathrm{C_3H_8}$$)?

Accepted Answer

$$\mathrm{C_3H_8 + 5O_2 \rightarrow 3CO_2 + 4H_2O}$$

Question 9

Which of the following statements about hydrogen bonding is TRUE?

Accepted Answer

Hydrogen bonding occurs when hydrogen is directly bonded to N, O, or F.

Question 10

What is the molecular geometry around the central atom in ammonia ($$\mathrm{NH_3$}$$)?

Accepted Answer

Trigonal pyramidal

Question 11

Which of the following is a constitutional isomer of hexane ($$\mathrm{C_6H_{14}}$$)?

Accepted Answer

2,3-dimethylbutane

Question 12

Which of the following best describes Markovnikov’s Rule in the addition of HX to an alkene?

Accepted Answer

The hydrogen atom adds to the carbon with more hydrogens already attached.

Question 13

Which of the following is the correct formula for an alkene with 5 carbon atoms?

Accepted Answer

$$\mathrm{C_5H_{10}}$$

Question 14

Which of the following is NOT a property of alkanes?

Accepted Answer

High reactivity with most chemicals

Question 15

Which of the following best describes the difference between a primary and a tertiary carbon?

Accepted Answer

A primary carbon is attached to one other carbon, while a tertiary carbon is attached to three other carbons.

Question 16

Which of the following is the correct IUPAC name for a ring with four carbons and a methyl group on carbon 2, an ethyl group on carbon 1, and an isopropyl group on carbon 3?

Accepted Answer

1-ethyl-3-isopropyl-2-methylcyclobutane

Question 17

Which of the following is a correct statement about aromatic compounds such as benzene?

Accepted Answer

Benzene is unusually stable due to resonance and is considered unsaturated.

Question 18

Which of the following best explains why 'like dissolves like' in terms of solubility?

Accepted Answer

Polar solvents dissolve polar solutes due to similar intermolecular forces.

Question 19

Which of the following is the correct formula for an alkyne with 4 carbon atoms?

Accepted Answer

$$\mathrm{C_4H_6}$$

Organic Chemistry Fundamentals: Structure, Bonding, Nomenclature, and Functional Groups

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