A substance undergoes a change. Which of the following indicates that the change was a physical change?

a. Heat energy was given off.

b. The substance changed shape.

c. The molecules of the substance changed.

d. The substance changed color.

Question

A substance undergoes a change. Which of the following indicates that the change was a physical change?

    a.   Heat energy was given off.

    b.   The substance changed shape.

    c.   The molecules of the substance changed.

    d.   The substance changed color.

anonymous · Answer

HI @hba !!! :) Thanks for coming :) I think the answer is B. the substance changed shape..... is that right??? but idk cuz isn't color also a physical change?? iheartfood is confused... :(

hba · Answer

IT is B, it's the only one that I can't think of a chemical reaction doing it. Keep in mind that physical cahnges can also produce heat (friction).

anonymous · Answer

ohhh okay!!  thanks!! :)