CIE AS Chemistry (9701) exams from 2022

Revision Notes

2.2.1 Reactions of Group 2 Elements

Reactions of Group 2 Elements

  • The Group 2 elements react with oxygen, water and dilute acids

Group 2 reactions table

Group 2 - Table 1_Reactions of Group 2 Elements, downloadable AS & A Level Chemistry revision notes

Group 2 reactions with oxygen & water chemical equations

Group 2 - Table 2_Reactions of Group 2 Elements, downloadable AS & A Level Chemistry revision notes

Group 2 reactions with dilute hydrochloric acid & dilute sulfuric acid chemical equations

Group 2 - Table 3_Reactions of Group 2 Elements, downloadable AS & A Level Chemistry revision notes

  • The reaction of all metals with oxygen follows the following general equation:

2M(s) + O2(g) → 2MO(s)

Where M is any metal in Group 2

Remember than Sr and Ba also form MO2

  • The reaction of all metals with water follows the following general equation:

M(s) + 2H2O(l) → M(OH)2(s) + H2(g)

Except for, Be which does not react with water

  • The reaction of all metals with dilute HCl follows the following general equation:

M(s) + 2HCl(aq) → MCl2(aq) + H2(g)

  • The reaction of all metals with dilute H2SO4 follows the following general equation:

M(s) + H2SO4(aq) → MSO4(aq) + H2(g)

Remember that SrSO4 and BaSO4 are insoluble

Exam Tip

Learn the general equation for the reaction with oxygen, water and dilute HCl/H2SO4 and the exceptions instead of memorizing the entire table!

Author: Francesca

Fran has taught A level Chemistry in the UK for over 10 years. As head of science, she used her passion for education to drive improvement for staff and students, supporting them to achieve their full potential. Fran has also co-written science textbooks and worked as an examiner for UK exam boards.
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