Experiment preparation: Fill the two jars with approximately 50 ml of water and

Experiment preparation: Fill the two jars with approximately 50 ml of water and add 25 ml of vegetable oil to each one.. Add the emulsifier: In one of the jars, add a teaspoon of liquid soap or a raw egg yolk. The other bottle is left without emulsifier to act as a control.. agitation: Close both bottles tightly and shake vigorously for about 30 seconds.. Immediately observe the mixture in both jars and then let the mixtures rest for a few minutes.. Observation: Observe the stability of the mixtures. In the bottle without emulsifier, The oil and water should quickly separate into two layers.. In the bottle with emulsifier, The mixture should remain more homogeneous for a longer period. Record of results: Note the differences in the stability of the mixtures and the time it takes for them to separate..