When two substance are brought in contact there may be a physical or a chemical changes depending on the condition. Give two examples to prove this statement plsssss

When two substance are brought in contact there may be a physical or a

1.	When two substance are brought in contact there may be a physical or a chemical changes depending on the condition. Give two examples to prove this statement plsssss
Answer» MPLE,Fire is in contact with PAPER,It's a chemical change here but if Paper is contacted with WATER,It's a physical change,Here,Because the Paper can be dried again,But chemical change is irreversible because burned paper can't get in its original form.

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When two substance are brought in contact there may be a physical or a chemical changes depending on the condition. Give two examples to prove this statement plsssss

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