fire0 - Fire Useful wiki pages: fire combustion What does...

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Fire Useful wiki pages: fire combustion
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What does it mean to burn? Change from one form to another, releasing energy Where does energy come from? Must come from the material that is burning QuickTimeª and a decompressor are needed to see this picture. QuickTimeª and a decompressor are needed to see this picture. QuickTimeª and a decompressor are needed to see this picture.
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Things you can burn Methane + oxygen Hydrogen + oxygen Thioformaldehyde + fluorine [NO O!] Propane + oxygen CH 4 + 2O 2 → CO 2 + 2H 2 O 2H 2 + O 2 → 2H 2 O CH 2 S + 6F 2 → CF 4 + 2HF + SF 6 C 3 H 8 + 5 O 2 → 3 CO 2 + 4 H 2 O
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“Covalent” Bonds Red: electron distribution Black circles:atoms Atoms stick together by sharing electrons cleverly Can share 1, 2, or 3 pairs of electrons [single, double, triple bonds] QuickTimeª and a decompressor are needed to see this picture. Electrons pull together positively charged atoms
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Example: methane Oxygen + Methane Water + Carbon Dioxide QuickTimeª and a decompressor are needed to see this pic QuickTimeª and a decompressor are needed to see this picture. QuickTimeª and decompressor are needed to see this QuickTimeª and a decompressor are needed to see this pic 2 double bonds 4 single bonds 1 double bond 2 single bonds This process releases roughly 1 Rydberg
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Requirements for fire Need input heat to break bonds of input oxygen and fuel Heat comes out from forming carbon dioxide and water That heat breaks bonds of more fuel and oxygen (plus generates light and heat) QuickTimeª and a decompressor are needed to see this picture.
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Typical Scheme for burning QuickTimeª and a decompressor are needed to see this picture.
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fire0 - Fire Useful wiki pages: fire combustion What does...

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