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Card 16

Front

Why did scientists not accpet Wegeners theory?

Back

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Card 17

Front

How does continental drift take place?

Back

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Card 18

Front

Why does continental drift take place?

Back

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Card 19

Front

Why is carbon dioxide removed before gasses are cooled to -200'c?

Back

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Card 20

Front

What gas does not condense when remaining gasses are cooled to -200'c

Back

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Card 21

Front

The oxygen contains another gas in the process of fractional distilation what is it?

Back

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Card 22

Front

What 2 types of hydrocarbons does polyethene contain?

Back

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Card 23

Front

How do you break down large hydrocarbon?

Back

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Card 24

Front

Why must air not enter the reactors?

Back

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Card 25

Front

What method can be used to contain butene?

Back

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