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The vapor pressure of a solvent in an ideal solution decreases as its mole fraction decreases.

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Free Energy, Gibbs Free Energy

The thermodynamic state function of a system that indicates the amount of energy available for the system to do useful work at constant T and P.

Ideal Solution

A solution that obeys Raoult's Law exactly.

Amphoterism

The ability to react with both acids and bases.Ability of substance to act as either an acid or a base.

Group

A vertical column in the periodic table, also called a family.

Octane Number

A number that indicates how smoothly a gasoline burns.

Diagonal Similarities

Refers to chemical similarities in the Periodic Table of elements of Period 2 to elements of Period 3 one group to the right, especially evident toward the left of the periodic table.

Kinetic Energy

Energy that matter processes by virtue of its motion.

Leclanche Cell

A common type of dry cell.

Adsorption

Adhesion of a species onto the surfaces of particles.

Electrolysis

Process that occurs in electrolytic cells.