(a)[1]
Suggest why the melting point for this sample did not match the true value.
(b)[3]
Use the kinetic particle model of matter to account for this observation.
(c)[1]
What colour does methyl orange turn in dilute sulfuric acid?
(d(i))[2]
Fill in the general word equation for this reaction. metal oxide + acid → [BLANK] + [BLANK]
(d(ii))[1]
Suggest how the leftover copper(II) oxide is removed.
(d(iii))[2]
The statements A to E are provided.