Intermolecular Forces and Their Effects

What is the rule that helps determine solubility between substances?

• Stronger dissolves weaker

• Heavier dissolves lighter

• Like dissolves like

• Opposites attract

Why do gasoline and water not form a solution?

• Water is nonpolar

• Gasoline only has weak London dispersion forces

• Gasoline has stronger intermolecular forces

• Gasoline is heavier than water

What phase do molecules with strong intermolecular forces typically exist in at room temperature?

• Gas

• Liquid or solid

• Plasma

• Vapor

Which substance is likely to have a higher melting point?

• Substance with weaker intermolecular forces

• Substance with stronger intermolecular forces

• Substance with lower molecular weight

• Substance with no intermolecular forces

What happens to water when exposed to the sun compared to oil?

• Both evaporate at the same rate

• Neither evaporates

• Water evaporates faster

• Oil evaporates faster

What is surface tension?

• The resistance to flow

• The tendency to acquire the least surface area

• The ability to dissolve in a solvent

• The pressure exerted by a vapor

Which liquid flows faster on an inclined plane?

• Water

• Neither flows

• Oil

• Both flow at the same rate

What is vapor pressure?

• The pressure exerted by a liquid

• The pressure exerted by a vapor in equilibrium with its liquid

• The pressure exerted by a solid

• The pressure exerted by a gas in a vacuum

Which molecule is likely to have stronger intermolecular forces?

• A molecule with lower molecular weight

• A molecule with no dipole-dipole forces

• A molecule with hydrogen bonding

• A nonpolar molecule

Why is iodine more likely to be solid compared to fluorine?

• Fluorine is heavier

• Fluorine has stronger intermolecular forces

• Iodine is polar

• Iodine has higher molecular mass