Wes melted some cheese over some tortilla chips to make nachos.

How is the melted liquid cheese different from the solid cheese?

A.
It has a different shape.
B.
It has a different flavor.
C.
It has a different color.
D.
It has a different mass.

A

Explanation:

Look through the answer choices:

A. This is definitely possible. The solid cheese was likely a solid square, but the melted cheese probably became a "blob", with no real shape - amorphous almost.

B. Unlikely; the cheese is still cheese. It didn't go through any chemical change that would affect its properties, so solid and melted cheese will taste the same.

C. Unlikely; substances only change color when they go through a chemical change. However, change of matter (melting, in this case) is a physical change, so the color should still be the same: if the solid was yellow, the melted cheese will also be yellow.

D. Wrong; when substances change state of matter, their masses don't change. Why? Mass is the measure of the amount of matter in a substance. The melted form of a substance has the same amount of matter as the solid form.

Thus, the answer is A.

Hope this helps!

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