Sublimation of camphor in Separation of Substances – Class 6 Science Experiment

Chapter Name: Separation of Substances

Activity Name: Sublimation of camphor in Separation of Substances

Activity Description:

Sublimation of camphor in Separation of Substances - Class 6 Science Experiment

The experiment involves observing the sublimation process of camphor, where it changes directly from a solid to a gaseous state without going through the liquid state.

Required Items:

  1. China dish
  2. Mixture of camphor and powdered salt
  3. Funnel
  4. Cotton
  5. Stand
  6. Burner

Step by Step Procedure:

  1. Take a china dish and place a mixture of camphor and powdered salt in it.
  2. Cover the dish with a funnel, ensuring that the tube of the funnel is closed with cotton.
  3. Set up a stand and place the dish on it.
  4. Heat the dish using a burner.

Experiment Observations:

  • As the dish is heated, observe the substance in the dish.
  • The camphor undergoes sublimation, changing directly from a solid to a gaseous state.
  • No liquid phase is observed during the process.
  • The gaseous camphor may have a characteristic odor.

Precautions:

  • Perform the experiment in a well-ventilated area or under a fume hood to prevent inhalation of the gaseous camphor.
  • Ensure that the burner flame is stable and controlled to avoid accidents.
  • Handle the china dish and other apparatus with caution to prevent any breakage or injuries.

Lesson Learnt from Experiment:

The experiment demonstrates the process of sublimation, where camphor undergoes a direct transformation from a solid to a gaseous state without passing through the liquid state.

This process can be useful in separating mixtures where one component can undergo sublimation, leaving behind the non-sublimable substances.

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