(a)[2]
Identify apparatus A and B. A [BLANK] B [BLANK]
(b)[2]
Suggest one explanation for why the mass of MgO is less than expected and say how the expected result could be obtained.
(c)[2]
The student carries out a similar experiment using 0.36 g of zinc rather than 0.36 g of magnesium. Explain why it is incorrect to expect the mass of zinc oxide to be $0.60\text{ g}$ as well. $[A_r: \text{Mg}, 24; \text{Zn}, 65]$
(d)[1]
Suggest a safety item that the student should wear when carrying out this experiment.