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Mademuasel [1]
3 years ago
8

Which of the following is considered a physical change? burning paper rusting of metal evaporating water

Physics
1 answer:
alex41 [277]3 years ago
6 0

When paper burns, some of the chemical compounds in the
paper combine with oxygen in the air and become different
chemical compounds.  That's a chemical change.

When iron rusts, or copper or silver turns green, that's the result
of the metal at the surface combining with the oxygen in the air and
forming a new chemical compound.  Those are chemical changes.

When water evaporates, H₂O in the liquid phase gains thermal
energy and changes to H₂O in the gaseous phase. No chemical
compounds are lost, gained, or changed to other compounds. 
It's just a physical change.

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