Question

A chemical change occurs when...

Both the appearance of a substance and its identity change

The identity of a substance changes but its appearance does not

The appearance of a substance changes but its identity does not

Neither the appearance of a substance nor its identity changes

Answer 1

(Please dont say, "what do you think it is"-)

Answer 2

"Chemical changes are changes that occur when one substance is turned into another substance." so try to find the answer from that.

Answer 3

well can i ask what comes to mind when you think of a chemical change occurs?

Answer 4

When a new substance is formed, the change is called a chemical change. so the answer would be ?