photochemical reaction
- noun
- /ˌfoʊtəˈkɛmɪkəl riˈækʃən/
- Specialized
:
reacción fotocatalítica
- The combination of these chemicals in conjunction with the energy provided by sunlight produces ozone through a series of photochemical reactions.
- photochemical reaction between nitrogen oxides
And so that then is the basic photochemical reaction.
- And so that then is the basic photochemical reaction.
Examples
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That final stage, oddly, involves the same photochemical reaction used to develop black-and-white photographs.
Blog text (16) -
Artificial photosynthesis splits water with sunlight to create hydrogen in a process analogous to photochemical reactions in plants.
Academic text (2009) -
This problem is likely to worsen as more fossil fuels are used, leading to photochemical reactions.
Academic text (2004) -
It is created when photochemical reactions involving gases from industrial and transportation sources occur in the presence of sunlight.
Academic text (2002) -
This application does not take into account long-term atmospheric reactions like oxidation and photochemical reactions.
Academic text (1993) -
In the first step, irradiation of the film triggers a photochemical reaction that produces an acidic product.
Academic text (2001) -
Ground-level ozone, which can irreparably harm lung function, is a result of these photochemical reactions and thus a major component of smog.
Academic text (2004) -
Photosynthetic LUE is the proportion of the energy used in the photochemical reaction process (photochemical quenching) to the amount of energy directed through the two nonphotochemical pathways.
Academic text (2010) -
The combination of sunlight and pollutants can lead to harmful photochemical reactions that produce smog.
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The photochemical reaction involved in developing photographs is essential for transforming the exposed film.
Synonyms
A chemical change caused by light that makes substances swap parts
Surface Forms
Morphology
The noun phrase is directly compositional: the adjective 'photochemical' specifies the type of 'reaction' as one initiated or influenced by light, so a learner who knows both constituent words can readily infer 'a chemical reaction caused or accelerated by light.' This follows a straightforward adjective+noun pattern and mirrors cross-linguistic formations (photo-/light + chemical/reaction), making the meaning transparent to B1 learners.
Etymology
Photochemical reaction comes from its parts: photo ('light') and chemical ('a change in a substance'). Imagine light hitting something and making it change, so the phrase means a chemical change that is started by light.
