CLASS 6 · LEARNING KNOWLEDGE
Combustion as a chemical change – basic principles
How it works
During combustion, a substance (fuel) reacts with oxygen from the air. New substances, usually oxides, are formed, and energy is released in the form of heat and often also light. Combustion is a chemical reaction because new substances with new properties are formed. The starting substances cannot simply be recovered afterward. Typical combustion products for many organic substances are carbon dioxide and water. Combustion differs from a physical change because new substances are formed.
Note
Combustion is a chemical reaction in which a substance reacts with oxygen and new substances as well as energy are produced.
Combustion is a chemical reaction in which a substance reacts with oxygen and new substances as well as energy are produced.
An example
What is formed during the combustion of wood mainly besides heat?
Besides heat, the combustion of wood mainly produces carbon dioxide and water. In addition, some ash usually remains.
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50 Exercises
To the learning unit →Own explanation and own practice exercises by AmyMath. Subject reference framework: Chemistry. The topic assignment may vary by federal state.