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SAI INTERNATIONAL SCHOOL
                                                        Class - VI
                                                 Subject - Chemistry
                                               Topic – Air Around Us
                                             Sub-Topic – Oxygen Cycle



                                                 Practical Worksheet



               AIM: To prove that one-fifth part or air is oxygen


               MATERIALS REQUIRED:  Solution of sodium hydroxide, a trough, a candle, a bottle,
               and a matchbox

               PROCEDURE:  Take the bottle and divide it into five equal parts and mark from 0 to 5.
               Fix the candle in the trough. Pour the sodium hydroxide solution into the trough and
               invert the marked bottle over it. Adjust the level of solution till the 0 mark. Now, remove
               the marked bottle, light the candle, and replace the bottle over it. Record your
               observation.

               OBSERVATION:
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               INFERENCE:
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