Difference between revisions of "Photochemical Reaction"
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: Some [[chemical]]s [[Decomposition Reaction|decompose]] when exposed to [[light]]. | : Some [[chemical]]s [[Decomposition Reaction|decompose]] when exposed to [[light]]. | ||
| − | : | + | : Photography originally used a [[chemical]] called [[Silver Nitrate]] which breaks down when exposed to [[light]] to make [[Silver]]. This creates a dark patch on the photographic paper. |
: A [[mixture]] of [[Hydrogen]] and [[Fluorine]] is sensitive to [[Ultraviolet]] [[light]] which will cause a [[Chemical Reaction|chemical reaction]]. | : A [[mixture]] of [[Hydrogen]] and [[Fluorine]] is sensitive to [[Ultraviolet]] [[light]] which will cause a [[Chemical Reaction|chemical reaction]]. | ||
: The [[retina]] in the [[eyes]] has a [[chemical]] which changes when exposed to [[light]]. This allows the [[Cell (Biology)|cells]] respond to [[light]]. | : The [[retina]] in the [[eyes]] has a [[chemical]] which changes when exposed to [[light]]. This allows the [[Cell (Biology)|cells]] respond to [[light]]. | ||
Latest revision as of 18:16, 8 April 2019
Key Stage 3
Meaning
A photochemical reaction is a chemical reaction that is caused by light.
About Photochemical Reactions
- Some chemicals decompose when exposed to light.
- Photography originally used a chemical called Silver Nitrate which breaks down when exposed to light to make Silver. This creates a dark patch on the photographic paper.
- A mixture of Hydrogen and Fluorine is sensitive to Ultraviolet light which will cause a chemical reaction.
- The retina in the eyes has a chemical which changes when exposed to light. This allows the cells respond to light.