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A binary compound of oxygen.

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Entropy

A thermodynamic state or property that measures the degree of disorder or randomness of a system.

Amino Acid

Compound containing both an amino and a carboxylic acid group.The --NH2 group.

Isomers

Different substances that have the same formula.

Essential Oil

A plant extract that has a distinctive odour or flavour.

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.

Supercritical Fluid

A substance at temperature above its critical temperature.

Emission Spectrum

Spectrum associated with emission of electromagnetic radiation by atoms (or other species) resulting from electronic transitions from higher to lower energy states.

 

Coordination Sphere

The metal ion and its coordinating ligands but not any uncoordinated counter-ions.

PseudobinaryIonic Compounds

Compounds that contain more than two elements but are named like binary compounds.

Total Ionic Equation

Equation for a chemical reaction written to show the predominant form of all species in aqueous solution or in contact with water.