Presentation on theme: "Hydrogen and water. ////////////// Objective 2.26 Describe the reaction of dilute HCl and H 2 SO 4 with Mg Al Zn Fe."— Presentation transcript:
Hydrogen and water
Objective 2.26 Describe the reaction of dilute HCl and H 2 SO 4 with Mg Al Zn Fe
Experiment Take a few pieces of the metal in the test tube Add 5 ml of HCl to it Cover the test tube with a rubber bung Test the gas with a lighted splint Write down the observations in your copy book.
Combustion of hydrogen Word equation Hydrogen + oxygen water Chemical equation H2 + O2 H2O Where do you think this reaction is used?
Chemical test for water Anhydrous CuSO 4 +H 2 O CuSO 4.5H 2 O colourless blue
Physical test for water Melting point Boling point Freezing point density