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A physical state of matter which exists at extremely high temperatures in which all molecules are dissociated and most atoms are ionized.

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Standard Reaction

A reaction in which the numbers of moles of reactants shown in the balanced equation, all in their standard states, are completely converted to the numbers of moles of products shown in the balanced equation, also sall at their standard state.

Nonelectrolyte

A substance whose aqueous solutions do not conduct electricity.

Photon

A packet of light or electromagnetic radiation, also called quantum of light.

 

Emulsifying Agent

A sustance that coats the particles of the dispersed phase and prevents coagulation of colloidal particles, an emulsifier.

Interesting facts about metals

Metals have been used by people since ancient times. All the time the process of obtaining them was improved, useful alloys of various metals appeared. Let’s look at interesting facts about metals.

Acidic Salt

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

Graham's Law

The rates of effusion of gases are inversely proportional to the square roots of their molecular weights or densities.

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.

Lewis Dot Formula (Electron Dot Formula)

Representation of the core of a molecule, ion or formula unit by showing atomic symbols and only outer shell electrons.

End Point

The point at which an indicator changes colour and a titration is stopped.