Question 1

Which of the following best describes an intramolecular force?

Accepted Answer

A force that exists within a molecule, holding atoms together in a chemical bond.

Question 2

Which type of intermolecular force is present between all molecules, regardless of polarity?

Accepted Answer

London dispersion forces

Question 3

What is the primary intermolecular force between water ($\mathrm{H_2O}$) and sodium chloride ($\mathrm{NaCl}$) in an aqueous solution?

Accepted Answer

Ion-dipole forces

Question 4

Which of the following molecules can form hydrogen bonds with water?

Accepted Answer

$\mathrm{C_2H_5OH}$

Question 5

Which intermolecular force is the strongest?

Accepted Answer

Ion-dipole forces

Question 6

A drop of water forms on a leaf due to cohesion. Which type of force is primarily responsible for this phenomenon?

Accepted Answer

Hydrogen bonding

Question 7

Which of the following compounds would exhibit only London dispersion forces as its primary intermolecular force?

Accepted Answer

$\mathrm{CH_4}$

Question 8

Which intermolecular force is responsible for the high boiling point of ethanol ($\mathrm{C_2H_5OH}$) compared to ethane ($\mathrm{C_2H_6}$)?

Accepted Answer

Hydrogen bonding

Question 9

Which of the following best explains why $\mathrm{CH_3CH_2CH_3}$ (propane) has a higher boiling point than $\mathrm{CH_4}$ (methane)?

Accepted Answer

Propane has stronger London dispersion forces due to its larger size.

Question 10

Which of the following is NOT a type of intermolecular force?

Accepted Answer

Covalent bond

Question 11

A nurse dissolves Epsom salts ($\mathrm{MgSO_4}$) in water for a bath. What is the primary intermolecular force between the salt and water?

Accepted Answer

Ion-dipole forces

Question 12

Which of the following molecules will exhibit dipole-dipole forces?

Accepted Answer

$\mathrm{CH_3Cl}$

Question 13

Which statement about London dispersion forces is TRUE?

Accepted Answer

They increase with the size and mass of the molecule.

Question 14

Which of the following best describes the difference between intermolecular and intramolecular forces?

Accepted Answer

Intramolecular forces hold atoms together within a molecule, while intermolecular forces act between molecules.

Question 15

Which of the following scenarios involves intermolecular forces?

Accepted Answer

Condensation of water vapor

Question 16

Which type of intermolecular force is present between $\mathrm{KCl}$ and $\mathrm{CH_3OH}$ in solution?

Accepted Answer

Ion-dipole forces

Question 17

Which of the following molecules will have the highest number of different intermolecular forces?

Accepted Answer

$\mathrm{CH_3CH_2OH}$

Question 18

Which intermolecular force is responsible for the capillary action that allows water to move up the veins of a plant?

Accepted Answer

Hydrogen bonding

Question 19

Which of the following species is expected to have the largest dispersion forces?

Accepted Answer

$\mathrm{CH_3CH_3}$

Question 20

Which of the following is a correct statement about hydrogen bonding?

Accepted Answer

It requires hydrogen to be bonded directly to F, O, or N.

Intermolecular and Intramolecular Forces in GOB Chemistry

Study Guide - Practice Questions