Solids, Liquids, Ideal Gas Law, and Mixtures

Which of the following is the strongest intermolecular force?

• London dispersion forces

• Covalent bonds

• Hydrogen Bonds

• Dipole-Dipole interactions

Strong intermolecular forces cause which of the following:

• Low surface tension

• Low viscosity

• Low vapor pressure

• Low boiling point

In a nonpolar molecule, what determines the boiling point?

• Molar mass

• Hydrogen bonding

• Number of Electrons

• Number of Neutrons

Why does the process of vaporization take longer than the process of melting?

• Intermolecular forces are completely overcome during vaporization

• Intermolecular forces in the solid phase are weaker than in the liquid phase

• Electron clouds of methane molecules are less polarizable at lower temperatures.

• Vaporization involves a large increase in temperature.

Paper chromatography uses which of the following to separate substances?

• Molar mass

• Polarity

• Boiling point

• Magnetism

Distillation separates substances based on:

• molar mass

• boiling point

• magnetism

• polarity

A solid white crystalline substance with a low melting point, that does not conduct electricity as a solid or dissolved in water, is which of the following:

• Ionic

• Metallic

• Network covalent

• Molecular

An unknown substance that does not conduct electricity and has a very high melting point is:

• molecular

• ionic

• metallic

• network covalent

A brittle substance that does not conduct electricity as a solid, but will conduct electricity when dissolved in water is:

• molecular

• ionic

• metallic

• network covalent

A substance with a high melting point that conducts electricity both as a solid and a liquid is:

• molecular

• ionic

• metallic

• network covalent