Investigate the presence of micro-organisms in air and soil. Chemistry Experiments Filtration Evaporation Distillation Chromatography Grow crystals using alum or copper sulphate Investigate the pH of a variety of materials using the pH scale OC22 Show that approximately one fifth of the air is oxygen; Show that there is CO2 and water vapour in air. To show that approximately one fifth of the air is oxygen
Investigate the presence of micro-organisms in air and soil. Chemistry Experiments Filtration Evaporation Distillation Chromatography Grow crystals using alum or copper sulphate Investigate the pH of a variety of materials using the pH scale OC22 Show that approximately one fifth of the air is oxygen; Show that there is CO2 and water vapour in air. To show that approximately one fifth of the air is oxygen