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A combustion reaction takes place when charcoal burns. Carbon atoms in the charcoal react with the oxygen molecules in the air to form a new compound called carbon dioxide. This reaction also produces heat.
This clip is from:
First broadcast:
28 February 2008

Classroom Ideas

The clip can be used to cover combustion as a reaction and to discuss the reactants and products. Ask students to describe a molecule of carbon dioxide to their partners. As a practical exercise, a candle could be burned and the products drawn over blue cobalt chloride paper and through limewater to show the presence of water and carbon dioxide.