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    188宝金博页面版: Core Practicals for Year 11 Science - wps.prenhall.com

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    内容提示： Core Practicals for Year 11 Science Teachers' and Technicians' notes by Anne Wignall and Terry Wales 1 Precipitation reactions A simple precipitation experiment to try to find out which compounds are soluble and which insoluble. Equipment spotting tiles (or test tubes in racks) droppers Chemicals Approximately 0.1 mol L –1 solutions (concentration is not critical) of NaCl, Na 2 SO 4 , NaOH, Na 2 CO 3 , KNO 3 , Cu(NO 3 ) 2 , Mg(NO 3 ) 2 , Ca(NO 3 ) 2 , Pb(NO 3 ) 2 , Fe(NO 3 ) 2 (or FeSO 4 labelled Fe...

    文档格式：DOC | 页数：26 | 浏览次数：54 | 上传日期：2016-03-24 15:33:51 | 文档星级：
    Core Practicals for Year 11 Science Teachers' and Technicians' notes by Anne Wignall and Terry Wales 1 Precipitation reactions A simple precipitation experiment to try to find out which compounds are soluble and which insoluble. Equipment spotting tiles (or test tubes in racks) droppers Chemicals Approximately 0.1 mol L –1 solutions (concentration is not critical) of NaCl, Na 2 SO 4 , NaOH, Na 2 CO 3 , KNO 3 , Cu(NO 3 ) 2 , Mg(NO 3 ) 2 , Ca(NO 3 ) 2 , Pb(NO 3 ) 2 , Fe(NO 3 ) 2 (or FeSO 4 labelled Fe 2+ , if iron(II) nitrate is not available). 2 Neutralisation reactions Many students believe that acids react with everything. This practical is intended to help students understand that only some substances will react with and neutralise acids. Students may already know the gas given off when acids react with carbonates, or you may choose to have them test for hydrogen and oxygen as well. Equipment spotting tiles (or test tubes in racks) droppers delivery tubes and matching test tubes large beaker or ice-cream container burner (if testing for oxygen and hydrogen) wooden splints (if testing for oxygen) Chemicals bench solutions of HCl and H 2 SO 4 (1 or 2 mol L –1 ) two solid chlorides eg NaCl, KCl, MgCl 2 , ZnCl 2 two solid carbonates eg Na 2 CO 3 , K 2 CO 3 , CuCO 3 , ZnCO 3 , MgCO 3 two solid hydroxides eg Ca(OH) 2 , Mg(OH) 2 , Zn(OH) 2 two solid nitrates eg NaNO 3 , KNO 3 , Mg(NO 3 ) 2 , Zn(NO 3 ) 2 two solid oxides eg MgO, ZnO, CuO two solid sulfates eg Na 2 SO 4 , K 2 SO 4 , MgSO 4 , ZnSO 4 , CuSO 4 universal indicator solution

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