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Doc Brown's Chemistry AQA GCSE Science-CHEMISTRY 2 Revision Notes

Chemistry Unit C2.6 Acids, bases and salts Study Notes

CHEMISTRY UNIT 2 Chemistry 2 for GCSE Additional Science or GCSE Chemistry

REVISION NOTES GUIDE SUMMARY: What do you need to know for the examinations? What do you need to able to do in the exams? In AQA GCSE Science A examinations HT means for higher tier students only. Sorry, but I don't have much time to answer questions, but if you see any apparent errors or wish to comment, please email me. All my notes, learning objectives, comments for exam revision are based on the official AQA GCSE Science A Key Stage 4 syllabus specification.

  • Throughout this unit you will be expected to write word equations for reactions specified.

  • Higher tier (HT) candidates will also be expected to write and balance symbol equations for reactions specified throughout the unit.

AQA GCSE Science CHEMISTRY Unit C2.6 Acids, bases and salts

  • Know that soluble salts can be made from acids and insoluble salts can be made from solutions of ions.

  • Know that when acids and alkalis react the result is a neutralisation reaction.

  • You should be able to use your skills, knowledge and understanding to select an appropriate method for making a salt, given appropriate information.


AQA GCSE Science CHEMISTRY Unit C2.6.1 Making salts


AQA GCSE Science CHEMISTRY Unit C2.6.2 Acids and bases


  • Revise demonstrations you saw or practical work you did to develop skills and understanding which may have included the following:

    • the preparation of soluble salts:

      • - copper sulfate by adding copper oxide to sulfuric acid

      • - magnesium sulfate by adding magnesium oxide to sulfuric acid

      • - copper chloride by adding copper oxide to hydrochloric acid

      • - zinc nitrate by adding zinc oxide to nitric acid

      • - sodium chloride by adding sodium hydroxide to hydrochloric acid

      • - copper sulfate by adding copper carbonate to sulfuric acid

      • and investigation of the effect of conditions on the yield of the salt

    • the preparation of insoluble salts:

      • - lead iodide by mixing solutions of lead nitrate and potassium iodide

      • - barium sulfate by mixing solutions of barium chloride and sodium sulfate

      • and investigation of the effect of conditions on the formation of precipitates.

  • There are opportunities here for using pH sensors to investigate neutralisation.



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