(a(i))[1]
State the chemical name for MgSO$_4$.
(a(ii))[1]
The combined mass of compounds formed from 500 $\text{cm}^3$ of sea water is 12.0 g. Calculate the combined mass of compounds formed from 750 $\text{cm}^3$ of sea water.
(a(iii))[1]
State which compound in Table 2.1 will react with an acid to give carbon dioxide.
(b)[2]
Potassium bromide is present in sea water and contains bromide ions. Describe a test for bromide ions. Include the test and observations.
(c)[2]
Calcium ions occur in sea water. Complete Fig. 2.1 to show the electronic configuration of a calcium ion and the ion’s charge.
(d)[2]
Sodium chloride is a solid at room temperature. Describe how the particles are arranged and how they move in a solid.
(e)[1]
Sea water contains nitrate ions in solution. State one source of nitrate ions.