Question

1. choose all that apply. which two facts are about physical changes? the substance changes size or shape but remains the same substance. it is sometimes possible to change the substance back. the change cannot be reversed. the change results in a new substance.

Explanation:

Physical changes only affect physical properties like size or shape of a substance, not its chemical composition. They are often reversible. Chemical changes result in a new substance and are usually irreversible.

Answer:

The substance changes size or shape but remains the same substance.
It is sometimes possible to change the substance back.