General chemistry

General chemistry

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General chemistry

Complexing agent

Chemistry; General chemistry

A ligand that binds to a metal ion to form a complex.

Isochore

Chemistry; General chemistry

A contour line that corresponds to values measured at identical volumes. For example, a curve on a plot of gas pressure measured at different temperatures in a rigid container is an isochore.

Reverse osmosis

Chemistry; General chemistry

Solvent molecules flow spontaneously from a dilute solution through a semipermeable membrane to a more concentrated solution (osmosis). In reverse osmosis, pressure is applied to the more ...

The first law states that energy cannot be created or destroyed. Many equivalent statements are possible, including: Internal energy changes depend only on the initial and final states of the system, ...

Oxygen

Chemistry; General chemistry

Element 8, atomic weight 15.9994, a colorless, odourless gas that makes up about 1/5 of the earth's atmosphere and (in combined form) 8/9ths of earth's oceans and almost half of the earth's crust. ...

Valence shell

Chemistry; General chemistry

The shell corresponding to the highest value of principal quantum number in the atom. The valence electrons in this shell are on average farther from the nucleus than other electrons; they are ...

Complexometric titration

Chemistry; General chemistry

A titration based on a reaction between a ligand and a metal ion to form a complex. For example, free Ca2+ in milk powder can be determined by titrating a milk powder sample with EDTA solution, ...