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Melting, boiling, and bending are considered physical changes, but burning is a chemical change. Explain why this is so.

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If you melt, boil, or bend an item, it is still the same thing. For instance, If you melt a sugar cube, it will stay as sugar. But if you burn paper, it will turn into ash. Hope this helps!
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Burning is a chemical change because the particles undergo a molecular change when they are burned. Here is an example- wood turning to smoke.
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