Question

7. Which of the following changes could be associated with either a chemical change OR a

physical change?
a. The change cannot be reversed
b. Bending of metal
c. New substances formed
d. Change in color

Answer 1

a: chemical change because the change cannot be reversed.

b: physical change because the action can be reversed.

c: chemical change.

d:chemical change.

any change that cannot be reversed is a chemical change and any change that can be reversed is a physical change.