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Liquid triester of glycerol and unsaturated fatty acids.

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Crystal Lattice Energy

Amount of energy that holds a crystal together, the energy change when a mole of solid is formed from its constituent molecules or ions (for ionic compounds) in their gaseous state.

Semiconductor

A substance that does not conduct electricity at low temperatures but does so at higher temperatures.

Leclanche Cell

A common type of dry cell.

Rate-determining Step

The slowest step in a mechanism, the step that determines the overall rate of reaction.

Saturated Solution

Solution in which no more solute will dissolve.

Band Theory of Metals

Theory that accounts for the bonding and properties of metallic solids.

Activity Series

A listing of metals (and hydrogen) in order of decreasing activity.

Graham's Law

The rates of effusion of gases are inversely proportional to the square roots of their molecular weights or densities.

Clay

A class of silicate and aluminosilicate minerals with sheet-like structures that have enormous surface areas that can absorb large amounts of water.

Heterogeneous Mixture

A mixture that does not have uniform composition and properties throughout.