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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

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Answer:

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.

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