Name:_______________
Date:__________
1. _________ is the element which composes 79% of air.
2. ______ fuels are derived from the remains of ancient dead plants and animals.
3. _____ ___ is a mixture of hydrocarbons which must be separated to be useful as fuels.
4. ________ _______ results when a hydrocarbon is burned in the presence of plenty of oxygen.
5. A ____ is any substance burned to supply energy.
6. Theoretically, ________ is the most complete burning fuel.
7. ________ is the catalyst in the automobile catalytic converter?
8. ______ _____ and _____ _____ are pollutants which can cause acid rain.
9. The _________ _________ is designed to trap and remove many pollutants in automobile exhaust.
10. A __________ is a devise which mixes air with gasoline in many cars.
11. _______ ___ is mostly methane with some ethane and propane.
12. ____ is composed of carbon and hydrocarbons.
13. ________ is an average of octane.
14. A _____ captures the vaporized hydrocarbons in a refinery.
15. __________ ___________ is the process of separating the hydrocarbons in crude oil.
16. ________ is the process of changing heavy hydrocarbons into lighter hydrocarbons.
17. __________ ______ results when a hydrocarbon is burned with limited oxygen.
18. Are fossil fuels a renewable resource? yes_____, no _____
19. Which is more plentiful, coal or natural gas?
20. Which burns cleaner, coal or natural gas?
21. Diesel engines differ electrically from gasoline internal combustion engines in that they do not have _____ plugs.
22. _______ and ______ are gases which can be cooled to condense them into a liquid.
23. ______ is a country which still sells leaded gasoline.
24. Name the three drawbacks to using hydrogen gas as a fuel.
25. How many hydrocarbons compose gasoline?
26. ______ _______ and _____ are the products released in complete burning.
27. ______ _______, _____, ______ _________, and ____ are the products released in incomplete burning.
28. Do all hydrocarbons burn incomplete to some degree?
29. Name three fossil fuels.