I opened my newly cleaned and recently lit wood-burning stove just now and was able to film this glowing movement on the roof of the stove. It was a spreading red glow of burning soot. This is exactly the effect which, if it happened in my chimney, might start a serious fire. The soot had become hot as a result of the fire and the sudden rush of oxygen that opening the door provided allowed it to ignite. I only filmed a few seconds but the fire spread from one corner of the roof to the other in an intricate and seemingly random way.
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Questions…
- What three conditions are necessary for fire to burn?
- Of what element is soot chiefly made?
- What two compounds might form if it oxidises?
- Name a compound which, like soot, is also black.
- What form of energy does soot have?
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