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Electrons in filled sets of s , p orbitals between the nucleus and outer shell electrons shield the outer shell electrons somewhat from the effect of protons in the nucleus, also called screening effect.

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Ternary Compound

A compound consisting of three elements, may be ionic or covalent.

DP number

The degree of polymerization, the average number of monomer units per polymer unit.

Quantum Mechanics

Mathematical method of treating particles on the basis of quantum theory, which assumes that energy (of small particles) is not infinitely divisible.

Distillate

The material in a distillation apparatus that is collected in the receiver.

 

Chemistry of the sky

Chemistry can teach us about the composition of celestial bodies and determine their age.

Foam

Colloidal suspension of a gas in a liquid.

Standard Electrode Potential

By convention, potential, Eo, of a half-reaction as a reduction relative to the standard hydrogen electrode when all species are present at unit activity.

 

yttrium metal

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

Stoichiometry

Description of the quantitative relationships among elements and compounds as they undergo chemical changes.

Galvanizing

Placing a thin layer of zinc on a ferrous material to protect the underlying surface from corrosion.