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:

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.