Question

what is mean physical change
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Answer 1

Answer:

A physical change is a type of change in which the form of matter is altered but one substance is not transformed into another. The size or shape of matter may be changed, but no chemical reaction occurs. ... Note that whether a process is reversible or not is not truly a criterion for being a physical change.

Explanation:

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Answer 2

Answer:

A physical change is a type of change in which the form of matter is altered but one substance is not transformed into another. The size or shape of matter may be changed, but no chemical reaction occurs.

Physical changes are usually reversible. Note that whether a process is reversible or not is not truly a criterion for being a physical change. For example, smashing a rock or shredding paper are physical changes that cannot be undone.