Social Studies, 02.02.2021 19:00, willoughbysierra

The diagram above describes the movement of molecules in a substance used to make fuel. What change did the fuel scientist observe in the substance?
a Before the process, the substance was a solid. After the process, it was a liquid.
b Before the process, the substance was a gas. After the process, it was a liquid.
c Before the process, the substance was a liquid. After the process, it was a solid.
d Before the process, the substance was a liquid. After the process, it was a gas.

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The diagram above describes the movement of molecules in a substance used to make fuel. What change...