Question

The wool being knitted into sweater is a physical change.' justify the statement

Answer 1

Physical changes are changes that do not result in the chemical alteration of a chemical substance. The chemical substance retains its chemical properties. This is the case when wool is knit into a sweater. There is no change in the chemical composition of the wool as it makes the sweater.

Answer 2

Answer:

In a physical change no new substance is formed . in this case when the wool is knitted into a sweater only the appearance is changed no new substance is formed . we can get back the wool from the sweater and thus it is a physical  change .