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6. What tool/machine do we use to carry out this process?
- Blast Furnace
- Haematite
- Steam Distillator
- Oxygen sucker
7. What do we call a metal containing another metal?
8. What does crude oil contain?
- Vapours
- Hydrocarbons
- Other oils
- Hyrocrabons
9. An alkene is saturated?
10. Which has more hydrogen in?
11. How many hydrogen atoms does butane have?
12. Lighter fractions (from being distilled) have a higher boiling point?
13. Which of these makes limestone erode?
- Sulphur dioxide
- Meat
- Oxygen
- Carbon dioxide
14. How are hydrocarbons broken down by the process of cracking?
- Boiled and let evaporate.
- Passed over a catalyst allowing thermal decomposition take place.
- Melted and then seived out so the bonds crack as they fall through the gaps.
- In a nickel catalyst at 60degrees.
15. Why do we harden oils?
- So they taste better
- So that they become more fatty because we like fat
- To make them spreadable
- To make them less runny
16. What does hydrophilic mean? (to do with emulsions)
17. What stopped scientists in 1920 believing Wegener's theory of continental drift?
- Birds
- There was a land bridge connecting West Africa with South America
- The core was hot
- They wondered where the sea had come from
18. What caused a rise in sulphur dioxide levels in the early atmosphere?
- Volcanoes
- Plants respiring
- Earthquakes
- Tsunamis
19. How much of the Earth's atmosphere today is made up of oxygen?
20. If we extract nitrogen from the air, what is a use of it?
- It is used in lightbulbs
- Freezing food
- Used in paint
- It is used in making jelly