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Substances that flow freely, gases and liquids.

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Heterogeneous Mixture

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

Amide

Compound containing the O-C-N group.Compound that can be considered a derivative of ammonia in which one or more hydrogens are replaced by a alkyl or aryl groups.

 

Acid

A substance that produces H+(aq) ions in aqueous solution. Strong acids ionize completely or almost completely in dilute aqueous solution. Weak acids ionize only slightly. Chemicals or substances having the property of an acid are said to be acidic.

Particulate Matter

Fine divided solid particles suspended in polluted air.

Mixture

A sample of matter composed of two or more substances, each of which retains its identity and properties.

Manometer

A two-armed barometer.

Alums

Hydrated sulfates of the general formula M+M3+(SO4)2.12H2).

Tyndall Effect

The scattering of light by colloidal particles.

Forbidden Zone

A relatively large energy separation between an insulator's highest filled electron energy band and the next higher energy vacant band. Beginning in the fourth energy level, a set of seven degenerate orbitals per energy level, higher in energy than s, p, and d orbitals of the same energy level.

Actual Yield

Amount of a specified pure product actually obtained from a given reaction. Compare with Theoretical Yield.