(a)[3]
Complete the diagram to show a suitable arrangement for collecting and measuring the oxygen volume. Add labels to your diagram.
(b(i))[1]
Describe how the rate of this reaction changes as time passes.
(b(ii))[1]
Deduce the time needed to collect $60\,\text{cm}^3$ of oxygen.
(b(iii))[1]
Draw a line on the grid to show how the oxygen volume changes with time when no catalyst is present.
(b(iv))[1]
Describe what effect an increase in temperature has on the rate of this reaction.
(c)[1]
Identify which one of these elements is most likely to act as a catalyst in chemical reactions. Draw a circle around the correct answer: C, Mg, Na, Ni, S.
(d)[2]
Describe a test for oxygen. State the test and the result.