Question

give an example each of useful physical change and chemical change . Explain how they are useful.

Answer 1

Answer:

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.

Answer 2

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QUESTION⬇️⬇️

give an example each of useful physical change and chemical change . Explain how they are useful.

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And unlike physical changes, these changes usually use a lot more energy, such as heat and light, because the molecular bonds need to be broken in order to rearrange them. ... Some chemical change examples include a piece of paper burning,

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