Iron is used in the Haber process, in which nitrogen and hydrogen react to make ammonia. A chemist carries out the reaction twice, once with iron and once without iron. The iron is weighed before and after the reaction.
Which result would show that the iron is acting as a catalyst?
Ammonia is made faster with iron, and the iron has the same mass afterwards.
Ammonia is made faster with iron, and the iron has a lower mass afterwards.
Ammonia is made at the same rate with iron, and the iron has the same mass afterwards.
Ammonia is made at the same rate with iron, and the iron has a lower mass afterwards.
91 exam-style questions on AQA GCSE Chemistry 1.3 Properties of transition metals, covering 1.3.1 Comparison with Group 1 elements and 1.3.2 Typical properties of transition metals. Each one has a worked solution and a mark scheme showing where the marks go.