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Unsaturated hydrocarbons that contain one or more carbon-carbon triple bonds.

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Silicones

Polymeric organosilicon compounds, contain individual or cross-linked Si-O chains or rings in which some oxygens of SiO4 tetrahedra are replaced by other groups.

Partial Pressure

The pressure exerted by one gas in a mixture of gases.

Fluids

Substances that flow freely, gases and liquids.

Coordination Isomers

Isomers involving exchanges of ligands between complex cation and complex anion of the same compound.

Solute

The dispersed (dissolved) phase of a solution.

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.

Alkali Metals

Metals of Group IA (Na, K, Rb).

Catalyst

A substance that speeds up a chemical reaction without being consumed itself in the reaction.
A substance that alters (usually increases) the rate at which a reaction occurs.

Ionization Isomers

Isomers that result from the interchange of ions inside and outside the coordination sphere.

Henry's Law

The pressure of the gas above a solution is proportional to the concentration of the gas in the solution.