(a)[1]
State which substance is: an element from the list.
(b)[1]
State which substance is: an iron ore from the list.
(c)[1]
State which substance is: the bleaching agent for wood pulp.
(d)[1]
State which substance is: used in the manufacture of fertilisers.
(e)[1]
State which substance is: the toxic gas made during the incomplete combustion of hydrocarbons.
(f)[1]
State which substance is: the ionic compound.
(g)[1]
State which substance is: one reactant in photosynthesis.
(h)[1]
State which substance is: one product of photosynthesis.