Separation of immiscible liquids in Is Matter Pure – Class 9 Science Experiment

Chapter Name: Is Matter Pure

Activity Name: Separation of immiscible liquids in Is Matter Pure

Activity Description:

Separation of immiscible liquids in Is Matter Pure - Class 9 Science Experiment

This experiment aims to demonstrate the separation of immiscible liquids, such as kerosene oil and water, using a separating funnel based on their densities.

Required Items:

  1. Kerosene oil / caster oil
  2. Water
  3. Separating funnel

Step by Step Procedure:

  1. Take a separating funnel and pour the mixture of kerosene oil / caster oil and water into it.
  2. Allow the mixture to stand undisturbed for some time, so that separate layers of oil and water are formed within the funnel.
  3. Open the stopcock of the separating funnel and carefully pour out the lower layer of water. Ensure not to mix the two layers.
  4. Close the stopcock of the separating funnel as the oil reaches the stopcock, preventing any mixing of the layers.

Experiment Observations:

Upon standing, the mixture of kerosene oil / caster oil and water will separate into two distinct layers within the separating funnel. The denser liquid (water) will settle at the bottom, while the less dense liquid (oil) will be on top.

Precautions:

  • Carefully pour out the lower layer of water to avoid mixing it with the upper layer of oil.
  • Ensure the stopcock is tightly closed once the water has been removed to prevent any accidental mixing.

Lesson Learnt from Experiment:

The experiment demonstrates the principle of separating immiscible liquids based on their densities. Immiscible liquids do not mix with each other and form separate layers, with the denser liquid settling at the bottom and the less dense liquid floating on top.

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