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A listing of metals (and hydrogen) in order of decreasing activity.

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Activity of a component of ideal mixture

A dimensionless quantity whose magnitude is: equal to molar concentration in an ideal solution, equal to partial pressure in an ideal gas mixture, and defined as 1 for pure solids or liquids.

Forbidden Zone

A relatively large energy separation between an insulator's highest filled electron energy band and the next higher energy vacant band. Beginning in the fourth energy level, a set of seven degenerate orbitals per energy level, higher in energy than s, p, and d orbitals of the same energy level.

Where is ozone used?

Ozone is widely used in various areas of our life. It is used in medicine, in industry, in everyday life.

Element

A substance that cannot be decomposed into simpler substances by chemical means.

Shielding Effect

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.

Solvent

The dispersing medium of a solution.

Mother Nuclide

Nuclide that undergoes nuclear decay.

Phenol

Hydrocarbon derivative containing an [OH] group bound to an aromatic raing.

 

Absolute Entropy (of a substance)

The increase in the entropy of a substance as it goes from a perfectly ordered crystalline form at 0 °K (where its entropy is zero) to the temperature in question.

Entropy is a measure of the “dilution” of thermal energy.

Condensed Phases

The liquid and solid phases, phases in which particles interact strongly.