chemical reaction influenced or initiated by light, particularly ultraviolet light.
A chemical reaction in which light plays an integral part.
A chemical reaction in the atmosphere that is triggered by sunlight. Ozone is a pollutant created from a photochemical reaction.
a chemical reaction produced by the action of light
a chemical reaction that requires light (in this case sunlight) to provide the energy for the reaction to proceed
a chemical reaction which is induced by light
The dissociation or excitation of a molecule caused by the absorption of a photon. How a molecule will react to absorbing a photon depends on the photon's energy and the molecule absorbing the photon. Excitation of a molecule can cause the molecule to react with other atoms or molecules more readily. Dissociation of a molecule can cause the dissociated parts of the molecule to react more readily with other atoms or molecules. A CFC molecule is dissociated by high energy ultraviolet light in the stratosphere.
A chemical reaction caused by light or ultraviolet radiation.
A chemical reaction can be enhanced when induced by light, just as some are speeded up by catalysts. Chlorine is one of a number of substances that undergo photochemical reactions. In sunlight, chlorine will react with carbon monoxide to produce the poisonous gas phosgene: A large number of organic reactions are carried out by irradiating with ultraviolet light.
A chemical change triggered by the radiant energy of the sun or other light source.
A reaction that is initiated by shining light, either visible or ultraviolet, on the reactants. (Segal, 963)
a chemical reaction that is activated by sunlight. Photochemical reactions are common in the formation of secondary air
The chemical reaction in CD-R and DVD-R discs resulting from the interaction of the organic dye and laser light. The interaction results in a change of property of the organic dye in the areas exposed to the laser light. These areas are known as bits or data that have been "written" into the organic dye.
a chemical reaction brought about by the action of light.
A chemical reaction in the atmosphere that is triggered by sunlight, often yielding a secondary pollutant.
A chemical reaction that involves either the absorption or emission of radiation. The absorption of an ultraviolet photon often provides the energy required to break chemical bonds and initiate a reaction sequence. Examples of photochemical reactions are the photolysis of nitrogen dioxide, NO2 â†’ NO + O, or ozone, O3 â†’ O2 + O. The latter reaction leads to the initiation of chain reactions that cause the breakdown of hydrocarbons and other pollutants in the troposphere. See also photolysis, photodecomposition.