(a(i))[1]
Name a different piece of apparatus that could be used instead of the measuring cylinder to collect the gas and determine its volume.
(a(ii))[2]
The gas collected in the measuring cylinder is hydrogen. Give a test, together with its result, to show that this gas is hydrogen.
(b)[2]
State two disadvantages of taking the bung out of the flask, adding the metal straight to the acid and then putting the bung back.
(c(i))[2]
Give the correct labels for the graph's two axes.
(c(ii))[3]
State why curve A begins steep, then levels off gradually and later becomes horizontal.
(c(iii))[1]
Identify which metal corresponds to each of curves A, B, C and D.
(c(iv))[3]
State three variables that should be kept unchanged in the experiments.
(c(v))[1]
Suggest why different masses of each metal are used for the four experiments.