Kinetic-Molecular Theory of Matter Quiz

What happens to molecules during the phase change from a liquid to a gas?

Speed up, move farther apart, and absorb heat energy

Which phase change involves molecules moving closer together and releasing heat energy?

Liquid to solid

What is the term for the phase change from a gas to a liquid?

Condensation

During the phase change of sublimation from a solid to a gas, what happens to molecules?

Speed up, move farther apart, and absorb heat energy Signup and view all the answers

What is the heat movement during the phase change from solid to liquid?

Heat leaves the solid as it melts Signup and view all the answers

Which factor has the greatest influence on the strength of dipole-dipole forces between molecules?

Electronegativity difference Signup and view all the answers

Why are ion-dipole forces important in understanding the behavior of electrolytes in polar solvents?

All of the above Signup and view all the answers

How do ion-dipole forces change as the charge on the ion increases?

They increase in strength. Signup and view all the answers

What is the primary reason that ionic compounds like sodium chloride can dissolve in polar solvents like water?

Ion-dipole interactions between the ions and polar solvent molecules. Signup and view all the answers

How do dipole-dipole forces compare to hydrogen bonding in terms of strength?

The relative strength depends on the electronegativity difference and bond length. Signup and view all the answers

Which of the following factors would lead to the weakest dipole-dipole interactions between molecules?

Large bond length and low electronegativity difference. Signup and view all the answers

How do ion-dipole forces affect the viscosity of an ionic solution in a polar solvent?

They increase the viscosity by increasing the friction between solvent and solute molecules. Signup and view all the answers

Which property of a polar solvent is most affected by the strength of ion-dipole interactions?

Solubility Signup and view all the answers

How do ion-dipole forces compare to ionic bonds in terms of strength?

The relative strength depends on the charges involved and the distance between the ions. Signup and view all the answers

Which of the following would have the weakest dipole-dipole interactions?

Molecules with a small electronegativity difference and long bond length. Signup and view all the answers

Kinetic-Molecular Theory of Matter Quiz

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