Fertilisers Flashcards

1
Q

What are fertilisers essential for?

A

The grow of crops

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2
Q

What are the two different types of fertiliser?

A

Natural

Man-made

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3
Q

What are the three main nutrients of healthy plant growth?

A

Nitrogen
Phosphorus
Potassium

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4
Q

What is an example of a natural fertiliser?

A

Animal Waste

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5
Q

What is Ammonia?

A

Ammonia is an extremely important chemical which can be used as a fertiliser

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6
Q

What can Ammonia be used to make?

A

Other Fertilisers

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7
Q

What does the Haber process manufacture?

A

Ammonia

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8
Q

How does the Haber process work?

A

We collect nitrogen from the air and add it to Hydrogen. They are then heated at 400 degrees with and iron catalyst at a pressure of 200 atmospheres

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9
Q

Some say that the Haber process is uneconomical. Why is this?

A

Only around 15% Ammonia is produced

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10
Q

What is done to ensure that the process is more economical?

A

The left over Nitrogen and Hydrogen is plugged back into the reaction chamber to be reused

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11
Q

What is the last step of the Haber process?

A

Cooling the Ammonia down to a liquid

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