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International Young Naturalists’ Tournament

International Young Naturalists’ Tournament. 22. Chemistry Serbian team Regional Center For Talented Youth. 22. Chemistry.

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International Young Naturalists’ Tournament

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  1. International Young Naturalists’ Tournament 22. Chemistry Serbian team Regional Center For Talented Youth

  2. 22. Chemistry Five test tubes contain aqueous solution of copper sulfate, ammonium sulfate, sodium carbonate, iron sulfate and calcium chlorine. Determine what substance is in each test tube.

  3. Chemicals • Copper-sulfate CuSO4 • Ammonium-sulfate (NH4)2SO4 • Sodium-carbonate Na2CO3 • Iron-sulfate FeSO4 • Calcium-chlorine CaCl2

  4. Methods • CuSO4– blue • (NH4)2SO4+NaOHNa2SO4+NH3 +H2O • Na2CO3+2HCl2NaCl+CO2 +H2O • FeSO4– dark green-brown color • CaCl2—left

  5. Thank you for your attention

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