A chemical change is when one or more substances change into one or more different substances.
This is also called a chemical reaction.
- When wood or fabric burn, they change into ashes and carbon dioxide.
- When milk changes into yoghurt or cheese, it is no longer milk.
- When fruit is overripe, the colour and flavour change.
Chemical reactions are frequently used in industry.
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| Overripe pear. Photo by Nancy Waldman |
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