Question

matter interactions unit test
a student cuts some fabric into two pieces. is this change physical or chemical? (1 point)
o it is a physical change because the process is reversible.
o it is a physical change because there is no reaction.
o it is a chemical change because the size changes.
o it is a chemical change because there is no phase change.

Explanation:

A physical change is a change in which no new substances are formed. Cutting fabric into two pieces does not change the chemical composition of the fabric. There is no chemical reaction occurring. Just the size and shape of the fabric piece is altered. Reversibility is not the key factor here. Phase change is not relevant to this situation. And size change alone (without a chemical reaction) does not make it a chemical change.

Answer:

It is a physical change because there is no reaction.