Group 1 and 2 elements and their compoundsEdexcel A-Level Chemistry: Mind map

Exam questions on Group 1 and 2 elements and their compounds

1. The first ionisation energies of three Group 2 elements are: magnesium 738 kJ mol⁻¹, calcium 590 kJ mol⁻¹ and barium 503 kJ mol⁻¹.
   Explain the trend in first ionisation energy down Group 2.2 marks
2. A technician investigates the reactions of Group 2 oxides and hydroxides with water and with dilute acids.
   Write the equation for the reaction of magnesium oxide with dilute hydrochloric acid, and the equation for the reaction of calcium hydroxide with dilute nitric acid.2 marks
3. A student heats samples of Group 1 and Group 2 nitrates and carbonates strongly in a hard glass test tube and records the changes.
   Write the equation for the thermal decomposition of magnesium nitrate and state the colour of the gas given off.3 marks