Group 2

Sketch a graph showing the trends of the properties shown in the table below as you go down Group 2 and explain the general trends.

Don’t worry about the Melting point

Atomic and physical properties

Reactions with Oxygen and Water and dilute acids

  • Observe when Magnesium and calcium are burned in air
  • Write a balanced equation for these reactions
  • What is the general trend for group 2?
  • Observe when Magnesium and Calcium are reacted with water.
  • What would happen if you reacted Magnesium with steam?
  • Write a balanced equation for these reactions
  • What is the general trend for group 2?
  • Predict what would happen with Strontium and write balanced reactions for oxygen and water
  • Research the behaviour of the metals with dilute hydrochloric acid, nitric acid and sulfuric acid
  • Summarise your findings on the table
  • What colour do they burn in Oxygen?

    Use flame tests and your own knowledge to copy and complete the table Extension: Why do they produce different colours?

    Thermal Decomposition

    Design an experiment to discover the trend of how thermally stable the carbonates are as you go down the group. Tabulate your results. Write balanced equations for this thermal decomposition.

    FB1: Calcium Carbonate                 FB2: Magnesium Carbonate

    Extension: Can you explain why?

    Research to discover the trend of how thermally stable the nitrates are as you go down the group. Write balanced equations for this thermal decomposition

    Behaviour of oxides, hydroxides and carbonates with water and dilute acids

    Research how the Group 2 oxides, hydroxides and carbonates react with water and dilute hydrochloric acid, nitric acid and sulfuric acid

    In the table summarise the trends and write down balanced equations

    Link the trends in solubility to pH

    Explain in more detail the behaviour with dilute sulfuric acid

    Homework

    Design a leaflet explaining the use of group 2 elements in industry specifically the use of Magnesium oxide as refractory lining material and lime in agriculture