Give an example each of a useful physical change and chemical change. Explain how they are
useful.
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A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding.
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Answer:
physical change:-converting water in to ice
chemical change:-burning a candle
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