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A substance whose aqueous solutions conduct electricity.

 

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Lanthanide Contraction

A decrease in the radii of the elements following the lanthanides compared to what would be expected if there were no f-transition metals.

Thermal Cracking

Decomposition by heating a substance in the presence of a catalyst and in the absence of air.

 

Alpha Particles

A helium nucleus.

Alkylbenzene

A compound containing an alkyl group bonded to a benzene ring.

Chemical Kinetics

The study of rates and mechanisms of chemical reactions and of the factors on which they depend.

yttrium metal

Any of a subgroup of rare-earth elements, of which the cerium and terbium metals comprise the other two subgroups.

Insoluble Compound

A very slightly soluble compound.

Homologous Series

A series of compounds in which each member differs from the next by a specific number and kind of atoms.

Saccharide

An organic compound containing a sugar or sugars.

Cathode Ray Tube

Closed glass tube containing a gas under low pressure, with electrodes near the ends and a luminescent screen at the end near the positive electrode, produces cathode rays when high voltage is applied.