Difference between revisions of "Soot"
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: Many [[particle]]s of [[soot]] build up to form a layer of black powder. | : Many [[particle]]s of [[soot]] build up to form a layer of black powder. | ||
: During the industrial revolution soot built up on [[tree]]s which caused the white moths to be visible to predators. After a few years [[Evolution by Natural Selection|natural selection]] had killed off all the white moths while a [[mutation]] caused some moths to be black, allowing them to survive. | : During the industrial revolution soot built up on [[tree]]s which caused the white moths to be visible to predators. After a few years [[Evolution by Natural Selection|natural selection]] had killed off all the white moths while a [[mutation]] caused some moths to be black, allowing them to survive. | ||
| − | : [[Soot]] is | + | : [[Soot]] is [[product|produced]] in the following [[Incomplete Combustion|incomplete combustion]] [[Chemical Reaction|reactions]]: |
: [[Methane]] + [[Oxygen]] → [[Soot]] + [[Water]] | : [[Methane]] + [[Oxygen]] → [[Soot]] + [[Water]] | ||
: <chem>CH4 + O2 -> C + 2H2O</chem> | : <chem>CH4 + O2 -> C + 2H2O</chem> | ||
Revision as of 09:33, 5 April 2019
Key Stage 3
Meaning
Soot is a very small lump of Carbon atoms made during combustion.
About Soot
Key Stage 4
Meaning
Soot is a very small lump of Carbon atoms made during incomplete combustion.
About Soot
- Many particles of soot build up to form a layer of black powder.
- During the industrial revolution soot built up on trees which caused the white moths to be visible to predators. After a few years natural selection had killed off all the white moths while a mutation caused some moths to be black, allowing them to survive.
- Soot is produced in the following incomplete combustion reactions:
- Methane + Oxygen → Soot + Water
- <chem>CH4 + O2 -> C + 2H2O</chem>
- Ethane + Oxygen → Soot + Carbon Monoxide + Water
- <chem>2C2H6 + 4O2 -> 2C + 2CO + 6H2O</chem>
- Ethene + Oxygen → Soot + Carbon Monoxide + Water
- <chem>2C2H4 + 3O2 -> 2C + 2CO + 4H2O</chem>
- Ethanol + Oxygen → Soot + Carbon Monoxide + Water
- <chem>2C2H5OH + 3O2 -> 2C + 2CO + 6H2O</chem>