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Line 1: − + − − Charcoal briquettes (commonly produced by partially burning wood) are used for outdoor barbecues. They burn slowly and without flames, providing steady heat for cooking picnic food. + − +
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'''Charcoal''' is [[carbon]] in its non-[[crystal]]line form.
'''Charcoal''' is [[carbon]] in its non-[[crystal]]line form. It is used as a fuel and in producing steel.
Charcoal briquettes (commonly produced by partially burning wood) are used for outdoor barbecues. They burn slowly and without flames, providing steady heat for cooking picnic food.
Charcoal pencils are used in [[sketching]].
Charcoal pencils are used in [[sketching]].
Charcoal is useful for reducing metallic oxides to the metal itself, because it can chemically combine with the oxygen in the metal oxide and turn into a gas (carbon dioxide), which escapes. This has been the method by which many elements were isolated. The same process, with another form of carbon (called "coke"), is used at an industrial level, for example, in making [[steel]].
Charcoal is useful for reducing metallic oxides, because it can chemically combine with the oxygen in the metal oxide. This produces a gas (carbon dioxide), which escapes. This has been the method by which many elements were isolated. The same process, with another form of carbon (called "coke"), is used at an industrial level, for example, in making [[steel]].
[[Category:Fuel]]
[[Category:Fuel]]