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Calculation 2 - Edexcel IGCSE Chemistry
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Calculation 2 - Edexcel IGCSE Chemistry

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Complete lessons and workbook Content Understand how the formulae of simple compounds can be btained experimentally, including metal oxides, water and alts containing water of crystallisation Know what is meant by the terms empirical and molecular ormula Calculate empirical and molecular formulae from xperimental data Calculate reacting masses using experimental data and hemical equations Calculate percentage yield Describe the formation of carbon dioxide from the thermal ecomposition of metal carbonates, including copper (II) arbonate Understand how to carry out calculations involving gas olumes and the molar volume of a gas (24 dm3 and 24,000 m3 at room temperature and pressure (rtp))
Testing for Ions - Edexcel IGCSE Chemistry
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Testing for Ions - Edexcel IGCSE Chemistry

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Content Understanding the general rules for predicting the solubility of salts in water: all common sodium, potassium and ammonium salts are soluble all nitrates are soluble 3.common chlorides are soluble, except silver chloride common sulfates are soluble, except those of barium and calcium 5.common carbonates are insoluble, except those of sodium, potassium and ammonium Describing simple tests for the cations (positive ions): Cu2+, Fe2+ , Fe3+ and NH4+ using sodium hydroxide solution Describe simple tests for the anions (negative ions): Cl-, Br- and I-, using dilute nitric acid and silver nitrate solution SO42-, using dilute hydrochloric acid and barium chloride solution CO32-, using dilute hydrochloric acid and identifying the carbon dioxide evolved Writing word and symbol (full and ionic) equations for these tests