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Chemistry 14 Online
mya15:

When a substance undergoes a physical change, A. its mass always decreases. B. its color always changes. C. its composition always changes. D. its composition remains the same.

Salmon:

To understand this question you need to know What is a physical change?

Salmon:

Can you explain to me what a physical change is in your own words?

mya15:

nvm i got it right

Salmon:

Good job!

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