States of Matter Quiz

Why do solids have fixed shape? The particles ______.

• are too far apart

• are very free to move

• do not have enough energy to move out of position

• can slide past each other but not move far enough to change shape

Which are the first particles to evaporate from a liquid? Those ____.

• with the lowest average kinetic energy

• with the highest average kinetic energy

• closest to the surface of the liquid regardless of kinetic energy

• farthest from the surface of the liquid regardless of kinetic energy

Which of these statements best explain why a liquid's rate of evaporation increases when the liquid is heated?

• The surface area of the liquid increases.

• The average kinetic energy of the liquid decreases.

• The potential energy of the liquid increases which in turn increases the rate of evaporation.

• More surface molecules have the energy required to overcome the attractive forces holding them in the liquid.

In which state of matter do the particles have the most kinetic energy?

• gas

• solid

• liquid

• both A and C

Which of the following characteristics is TRUE of most solids? Solids ____.

• are viscous

• are incompressible

• generally melt easily

• are made up of particles in rapid motion

What is referred to as the forces of attraction and repulsion between interacting molecules?

• attractive forces

• repulsive forces

• intermolecular forces

• intramolecular forces

What force of attraction holds HCl molecules together?

• dispersion interactions

• dipole-dipole interactions

• Van der Waals interactions

• dipole-induced dipole interactions

Which of the following interaction occurs between a permanent dipole and a neutral molecule?

• hydrogen bonding

• dipole-Dipole interactions

• Van der Waals interactions

• dipole-induced dipole interactions

When NaCl dissolves in water, aqueous Na+ and Cl- ions result. What force of attraction exists between Na+ and H2O?

• ion-ion

• ion-dipole

• dipole-dipole

• hydrogen bonding

Which of the following substances is held by London dispersion forces?

• Kr

• NH3

• H2S

• CH3OH