Chemistry 9701 · AS & A Level · Group 2

Group 2 — practice question

Magnesium, calcium, strontium and barium are the elements in Group 2.
(a(i))[1]

Write an equation for the change that shows the first ionisation energy of magnesium. Include state symbols.

(a(ii))[1]

Write an equation for strontium reacting with cold water. Include state symbols.

(a(iii))[1]

Describe and explain the trend in reactivity shown by these Group 2 metals when they react with cold water.

(b(i))[1]

Describe fully what is seen when anhydrous calcium nitrate is heated in a test tube and decomposition occurs.

(b(ii))[1]

Write an equation for the decomposition of calcium nitrate.

(b(iii))[3]

Describe and explain how the thermal stability of the Group 2 metal nitrates changes down the group.

(c)[4]

Describe and explain the pattern in the solubility of the Group 2 metal sulfates down the group.

Worked solution & mark scheme

This 12-mark question has a full step-by-step worked solution and mark scheme. One marking point: The equation is $\text{Mg}(g) \rightarrow \text{Mg}^+(g) + e^-$

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