Section A.1-A.3

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1. Hydrocarbons are molecular compounds that contain only atoms of the elements hydrogen and carbon.

2. Refining a resource is removing any unwanted materials from it.

3. Petroleum can be used in a variety of ways, as it can be a material in a sweater, or used to generator electricity.

4. Not very likely. This is because it needs to be separated into simpler mixtures.

5. Crude oil is unrefined liquid petroleum as it is pumped from the ground by oil wells.

6.
a. 11%
b. 89%

7. Fossil Fuels are obtained from crude petroleum

8.
a. Jacket, helmet, video-game controller, and carpets.
b. Different kinds of fabric.