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A binary compound of oxygen.

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Phase Diagram

Diagram that shows equilibrium temperature-pressure relationships for different phases of a substance.

Solubility Product Constant

Equilibrium constant that applies to the dissolution of a slightly soluble compound.

D -Transition elements (metals)

B Group elements except IIB in the periodic table, sometimes called simply transition elements EX. Fe, Ni, Cu, Ti .
For further information see Metals.

Heterogeneous Mixture

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

Conjugate Acid-base Pair

In Bronsted-Lowry terminology, a reactant and product that differ by a proton, H+.

Greenhouse Effect

Trapping of heat at the surface of the earth by carbon dioxide and water vapour in the atmosphere.

Ketone

Compound in which a carbonyl group is bound to two alkyl or two aryl groups, or to one alkyl and one aryl group.

Derivative

A compound that can be imagined to arise from a partent compound by replacement of one atom with another atom or group of atoms. Used extensively in orgainic chemistry to assist in identifying compounds.

Nucleus

The very small, very dense, positively charged center of an atom containing protons and neutrons, as well as other subatomic particles.

Percent by Mass

100% times the actual yield divided by theoretical yield.