An equation for a chemical reaction in which the number of atoms for each element in the reaction
and the total charge are the same for the reactants and the products.
Barometer
An instrument for measuring atmospheric pressure.
Base
A species that donates hydroxide ions or electrons, or that accepts protons. See Arrhenius base;
Basic solution; Brønsted-Lowry base; Lewis base.
Base dissociation constant (Kb)
The equilibrium constant that measures the degree of dissociation for a base under specific
conditions. For a base BOH:
Basic anhydride
An oxide that dissolves in water to form a basic solution.
Basic solution
An aqueous solution that contains more OH– ions than H+ ions. The pH of a basic solution is greater
than 7 at 25°C.
Beta (β) particle
An electron produced and ejected from the nucleus during radioactive beta decay.
Binding energy