Oil and soap solution in Carbon And Its Compounds- Class 10 Science Experiment

Chapter Name: Carbon And Its Compounds

Activity Name: Oil and soap solution in Carbon And Its Compounds

Activity Description:

Oil and soap solution in Carbon And Its Compounds- Class 10 Science Experiment

The experiment investigates the separation of oil and water layers using soap solution as an emulsifier. The goal is to observe the behavior of oil and water when mixed and shaken together, and then left undisturbed to see if the oil layer separates out.

Required Items:

  1. Two test tubes
  2. Water (approximately 10 ml)
  3. Cooking oil (or any other edible oil)
  4. Soap solution

Step by Step Procedure:

  1. Take about 10 ml of water in each of the two test tubes.
  2. To test tube A, add a drop of oil (cooking oil).
  3. To test tube B, add a drop of oil (cooking oil) and a few drops of soap solution.
  4. Label the test tubes as A and B, respectively.
  5. Vigorously shake both the test tubes for the same period of time.
  6. Observe the contents of both test tubes after shaking to note any immediate changes.

Experiment Observations:

  • In test tube A (water with oil), you will observe that the oil and water layers remain separate, forming distinct layers.
  • In test tube B (water with oil and soap solution), you will notice that the oil and water mix to form an emulsion, and the layers do not separate immediately after shaking.

Leave the test tubes undisturbed for some time and observe any changes:

  • After some time, in test tube A, the oil layer will float to the top and separate from the water layer.
  • In test tube B, the oil layer might not separate out as quickly as in test tube A due to the emulsifying action of the soap solution.


  1. Be careful while handling glass test tubes to avoid breakage.
  2. Use only a small amount of oil and soap solution as directed to minimize waste and ensure proper observation.
  3. Dispose of the contents safely and responsibly after the experiment.

Lesson Learnt from Experiment:

The experiment demonstrates the property of emulsification, where the soap solution helps to disperse the oil in the water, forming a stable emulsion. Emulsification is crucial in various industrial and household applications, such as in the production of soaps, detergents, and various food products.

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