Ammonia Chemical Bonding Worksheet Page 10
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28(ii)
State whether this reaction is exothermic or endothermic. .............................
Explain, by reference to your calculation, how you know.
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(2)
(Total 10 marks)
Q6.
Early atmospheres on Earth contained ammonia (NH
).
3
(a)
(i)
Complete the sentence.
Our atmosphere today is made up of about .............................. % nitrogen.
(1)
(ii)
Today we convert nitrogen back to ammonia mainly for the production of fertilisers.
What do plants convert the nitrogen in these fertilisers into?
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(1)
(b)
The conversion of nitrogen to ammonia is shown.
(i)
When making ammonia, what is one source of hydrogen?
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(1)
(ii)
Apart from ammonia, name one other product formed during this conversion.
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(1)
Page 10 of 28
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