Base
A reference value.
Chemistry
- A compound that reacts with an acid to form a salt .
- Substance which gives off hydroxide ions (OH-) in solution (Arrhenius).
- A molecule or ion that captures hydrogen ions (Bronsted-Lowry).
- A molecule or ion that donates an electron pair to form a chemical bond (Lewis).
Electronics
The region between the emitter and collector of a transistor that receives minority carriers injected from the emitter. It is the element that corresponds to the control grid of an electron tube.
Mathematics
In the expression xy, x is called the base and y is the exponent.
See also: Alkaline, Base Hydrolysis Constant, Brösted Base, Buffer Solutions, Conjugate Acid, Conjugate Base, Equivalence Point, Exponent, pH, pOH, Strong Base, Weak Bases.
Subjects: Chemistry Mathematics