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What must be true about the matter at the start of a fire versus the end?
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What must be true about the matter at the start of a fire versus the end?

User Alexander Nenashev
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Step-by-step explanation:

Three things are required in proper combination before ignition and combustion can take place---Heat, Oxygen and Fuel. There must be Fuel to burn. There must be Air to supply oxygen. There must be Heat (ignition temperature) to start and continue the combustion process.

User Jerluc
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