Chapter 11. The Science of Arson and Explosives. Methane gets oxidized to carbon dioxide. Oxygen gets reduced to water. Methane contains energy in the form of electrons in the hydrogen atoms. Oxygen loves to grab electrons, so it grabs the electron-containing hydrogens from carbon .
Oxygen gets reduced to water
Methane contains energy in the form of electrons in the hydrogen atoms
Oxygen loves to grab electrons, so it grabs the electron-containing hydrogens from carbon
Carbon combines with leftover oxygen atoms to form carbon dioxide
The breaking of the bonds in methane, releases energy, heat and light
The oxygen atoms that did grab the electron-containing hydrogens, become waterFire
CH4 + 2O2 CO2 + 2H2O + Energy / Heat / Light
4Fe + 3O2 2Fe2O3
No fire was produced, but iron is oxidized and oxygen is reduced.
Iron Oxide a.k.a. rust
Question: What about liquids and solid fuels? How do oxygen molecules combine freely with them if they are not in the gaseous state?
This is a Gas Chromatograph from suspicious fire debris
The KNO3 is the oxidizing agent.
3C + S + 2KNO3 3CO2 + N2 + K2S + heat
Carbon in charcoal is fuel
Sulfur stabilizes combustion
Saltpeter is the oxidizing agent
Carbon dioxide gas
Potassium Sulfide solid
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