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Compounds that contain only carbon and hydrogen.

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Acidic Salt

A salt containing an ionizable hydrogen atom. Acidic salt does not necessarily produce acidic solutions.

Ore

A natural deposit containing a mineral of an element to be extracted.

Spectrum

Display of component wavelengths (colours) of electromagnetic radiation.

Amine

Derivatives of ammonia in which one or more hydrogen atoms have been replaced by organic groups.

Allotropes

Different forms of the same element in the same physical state.

Zone Refining

A method of purifying a bar of metal by passing it through an induction heater, this causes impurties to move along a melted portion. This method applies the fact when a metal crystallizes on cooling, impurities are automatically expelled as they do not form part of the crystal.

Band of Stability

Band containing nonradioactive nuclides in a plot of number of neutrons versus atomic number.

Proton

A subatomic particle having a mass of 1.0073 amu and a charge of +1, found in thew nuclei of atoms.

Salinometer

An instrument for measuring the amount of salt in a solution. Also,"salimeter, salometer."

Saponification

Hydrolysis of esters in the presence of strong soluable bases.