Drive a Boat Using Soap

Aim:

To study the effect of soap molecules spreading in water using an interesting experiment.

Materials required:

  1. A large pan with some water in it.
  2. Some foil paper.
  3. A pair of scissors.
  4. A soap solution.
  5. A matchstick.

Procedure:

  1. Perfectly flatten the foil paper using a flat surface and then cut out a ‘boat’ using scissors. (don’t worry, it is just a 2D boat, see the pic below)
  2. Make a small channel at one end of the boat with a small circular cavity at the end of the channel. (See the pic below)
  3. Place the boat gently on the surface of the water in the dish.
  4. Dip the matchstick in the soap solution and carefully deposit a drop or two of soap solution in the cavity of the boat. The boat will accelerate quickly and speed across the water in the opposite direction of the channel.