REVIEW QUIZ IN GENERAL CHEMISTRY 2 (Q3)

Which statement accurately describes the relationship between molecular size and London dispersion forces?

• Larger molecules have stronger London dispersion forces.

• Smaller molecules have stronger London dispersion forces.

• Larger molecules experience weaker London dispersion forces.

• There is no correlation between molecular size and London dispersion forces.

Which factor is most important in determining the strength of dipole-dipole interactions in a molecule?

• molecular size

• number of atoms

• molecular weight

• electronegativity difference

Which causes dipole-dipole forces?

• Ionic bonding

• Covalent bonding

• Permanent dipole moment

• Temporary fluctuations in electron distribution

How does the presence of dissolved ions affect the boiling point of water?

• It turns water into a gas.

• It increases the boiling point.

• It decreases the boiling point.

• It has no effect on the boiling point.

Why does ice float on water?

• Ice and liquid water have the same density.

• Ice's density is not influenced by hydrogen bonding.

• Ice is less dense than liquid water due to hydrogen bonding in the solid state.

• Ice is more dense than liquid water due to the arrangement of water molecules.

Which statement best explains the cohesion of water molecules?

• Cohesion is unrelated to water's molecular properties.

• Water molecules repel each other due to a nonpolar nature.

• Water molecules attract each other due to hydrogen bonding.

• Water molecules only attract other substances, not each other.

What role do hydrogen bonds play in the unique properties of water, such as high heat capacity and high surface tension?

• Hydrogen bonds are responsible for water's color.

• Hydrogen bonds increase heat capacity and surface tension.

• Hydrogen bonds decrease heat capacity and surface tension.

• Hydrogen bonds have no impact on heat capacity or surface tension.

During a phase change from liquid to solid, what happens to the arrangement of particles?

• They speed up

• They disappear

• They become more chaotic

• They become more ordered

Which property of water that allows it to form droplets and surface tension?

• Cohesion

• Density Anomaly

• High Heat of Vaporization

• High Specific Heat Capacity

Which property of water is responsible for milder climates in coastal regions?

• Cohesion

• Density Anomaly

• High Heat of Vaporization

• High Specific Heat Capacity