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"Edexcel IGCSE Crude Oil Crossword": HTML5 Crossword

Across

3. Nitrogen diatomics are generally inert due to their ........... bond (6)
6. Groups of molecules separated according to their similar boiling points (9)
7. Another word (used in America) for Petrol (8)
8. This impurity is often found in fossil fuels (7)
9. Used a fuel in aviation (8)
11. Carbon monoxide binds irreversibly with ................ (11)
15. Cracking modifies the supply to cater for the ........... (6)
18. These forces increase as molecules get bigger (14)
19. Crude Oil is a ............. resource (6)
20. A substance that exothermically combusts (4)

Down

1. Non-Metal oxides are ............ (6)
2. Used in Cracking (7)
4. Breaking useless long chain molecules into more useful shorter chain molecules (8)
5. This type of combustion yields hazardous products (10)
10. Process that occurs in a tower/column (12)
12. Crude oil is very .............. (7)
13. Heaviest Fraction (7)
14. Removing sulphur and nitrogen oxides from waste gases (9)
16. Your 4x4 probably runs on this (6)
17. Smaller molecules are more ............... (8)

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