Question

A large block of wood was chopped into small pieces. At the same time, a big cube of metal was broken down into smaller pieces. Which type of changes are they? Both are physical changes, as no new substance is produced. Both are chemical changes, as they are irreversible. Only the chopping of the wooden block is physical change, as it can be reversed by gluing the pieces together. Only the breaking of the metal cube is physical change, as the metal pieces can be melted and recast as the metal cube.

Answer 1

Answer:

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