Related Words

Biochemical Reaction: The chemical reactions which take place within the human body.

Reaction Series: A series of interactions between a melt and mineral crystals in contact with the melt. In a reaction series the first formed crystals (highest temperature minerals) react with the melt to pr . . . View Full Definition

Rearrangement Reaction: A reaction in which a reactant and product are isomers of each other. Chemical bonds within the reactant are broken and reformed to produce the product.

Redox Reaction: A reaction that involves transfer of electrons from one substance to another. Redox reactions always involve a change in oxidation number for at least two elements in the reactants.

Reaction Rate: A reaction rate is the speed at which reactants are converted into products in a chemical reaction. The reaction rate is given as the instantaneous rate of change for any reactant or product . . . View Full Definition

Reaction Quotient: The product of the concentrations of the products, divided by the product of the concentrations of the reactants, for a chemical reaction which is not necessarily at equilibrium. For example . . . View Full Definition

Polymerase Chain Reaction (PCR): A method of amplifying or copying DNA fragments that is faster than cloning. The fragments are combined with DNA polymerase, nucleotides, and other components to form a mixture in which the . . . View Full Definition

Reaction: A decline in prices following an advance. Opposite of rally.

Abreaction: An emotional release or discharge after recalling a painful experience that has been repressed because it was not consciously tolerable. Generally the release is surprising to the individual . . . View Full Definition

Reaction Mechanism: A list of all elementary reactions that occur in the course of an overall chemical reaction.