Any substance that reduces, or donates electrons to, another; in so doing, it becomes oxidized
An atom, ion, or molecule that loses electrons in a chemical reaction, thereby reducing the substance with which it reacts
a substance that reduces another substance by supplying electrons to it Reducing agents cause other substances to be reduced in chemical reactions while they themselves are oxidized For example, tin(II) is a reducing agent in the following reaction
A substance that loses electrons during a reaction, causing another substance to be reduced
In a reduction reaction (which always occurs simultaneously with an oxidation reaction) the reducing agent is the chemical or substance which (1) combines with oxygen or (2) loses electrons to the reaction See Oxidation
The active ingredient in a developer It changes exposed silver halide crystals into dark metallic silver Also called the developing agent
the atom or ion that causes another atom or ion to be reduced The reducing agent will be oxidized
Is a chemical in a developing solution which converts exposed silver halides to black metallic silver
Substance that (1) combines with oxygen or (2) loses electrons to the reaction during a reduction reaction
a reactant that donates electrons to another substance to reduce the oxidation state of one of its atoms The reducing agent is the species that is getting oxidized
a substance capable of bringing about the reduction of another substance as it itself is oxidized; used in photography to lessen the density of a negative or print by oxidizing some of the slackened silver