Question

What happens when a substance undergoes a physical change?

Answer 1

Answer:

Some physical properties change, but the substance keeps its identity.

When dealing with these kind of questions, understand that the keyword here is physical change. Thus, all options that says no physical properties change are WRONG. So this leaves us with only 2 answers left. However, this is a physical change, no chemical change. Thus, the substance will keep its identity and not change.

Answer 2

Answer:

some physical properties change but it still keeps its identity.

Explanation:

Like when an iron bar is turned into iron filings.. it is still iron but it has changed physically.