General chemistry

General chemistry

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General chemistry

Sulfuric acid

Chemistry; General chemistry

An oily, corrosive liquid that acts as a strong acid when dissolved in water. Sulfuric acid has so many industrial uses that sulfuric acid production was once used as an index of industrial ...

Activated complex

Chemistry; General chemistry

A structure that forms because of a collision between molecules while new bonds are formed.

Double displacement

Chemistry; General chemistry

A double displacement or metathesis is a reaction in which two reactants trade fragments: AB + CD = AC + BD Most commonly, the fragments are ions, e.g. AgNO3(aq) + NaCl(aq) = AgCl(s) + NaNO3(aq)

A form of an element that has isotopic abundances that are different from the naturally occuring form. For example, "depleted" uranium has had most of the uranium-235 removed, and is an allobar of ...

Enthalpy

Chemistry; General chemistry

Enthalpy (H) is defined so that changes in enthalpy ( H) are equal to the heat absorbed or released by a process running at constant pressure. While changes in enthalpy can be measured using ...

Noble gas core

Chemistry; General chemistry

All completely filled shells underneath the valence shell .

Thermosetting

Chemistry; General chemistry

A polymer that solidifies on heating and cannot be remelted. The setting action results from crosslinking of the polymer chains at high temperature- a process that is not reversed by cooling and ...