The attraction between molecules of different substances.

A solid lacking a long-range, repeating order in its structure.

The temperature at which a liquid changes to a gas throughout the liquid volume.

The movement of a liquid through a narrow space due to adhesion and cohesion.

The attraction between molecules of the same substance.

The process of a gas changing to a liquid.

The pressure required to liquefy a gas at its critical temperature.

The temperature above which a gas cannot be converted to a liquid, regardless of applied pressure.

A solid with a regular, repeating arrangement of particles in a crystal lattice.

The transition of a gas directly to a solid.

The natural movement of molecules from an area of high concentration to an area of low concentration.

Attractive forces between polar molecules with partially charged ends.

Temporary, weak forces that occur between all molecules due to temporary dipoles.

A state where opposing processes occur at equal rates, resulting in no net change over time.

The surface process of a liquid changing to a gas.

A strong intermolecular force between a hydrogen atom bonded to a highly electronegative atom (oxygen, fluorine, or nitrogen).

Forces of attraction between molecules.

The energy of motion.

The energy required to separate one mole of an ionic crystal into its gaseous ions.

The temperature at which a solid transitions to a liquid state.

The curved surface of a liquid at the edge of its container.

The ability of a liquid to pass through a membrane or material.

A graphical representation of the phases of a substance under different temperature and pressure conditions.

The transition of a solid directly to a gas without going through a liquid phase.

A substance that lowers the surface tension of a liquid.

The inward pull exerted by molecules at the surface of a liquid.

The specific temperature and pressure at which all three phases of a substance (solid, liquid, and gas) exist in equilibrium.

The smallest repeating unit of a crystal lattice.

The pressure exerted by a vapor in equilibrium with its liquid phase.

The process of a liquid changing to a gas.

A measure of a liquid's resistance to flow.