How good is your basic chemistry?

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5%

True or False: When an air conditioner or a refrigerator cools the air, there is no reaction in the air molecules. Thus, the change in temperature is a chemical change.

True
False

Fact Lab

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Interesting fact:

In Earth’s solar system, Mars stands out with its red coloring, which is due to the fact that much of its surface contains iron oxide (a.k.a. rust).