Vegetable oil soap bubbles
So many bubbles from a few spoonfuls of vegetable oil!
Warning! Only under adult supervision.
- vegetable oil;
- alkaline drain cleaner;
Mix vegetable oil, alkaline drain cleaner, and glycerol. Let simmer on the stove for 10 minutes. Then add water and pour into a bowl. Blow into the resulting mixture through a straw – a lot of soap bubbles appear!
Alkaline drain cleaner contains sodium hydroxide. When heated, it reacts with vegetable oil, and a so-called saponification reaction takes place. In this case, this forms the substances comprising soap, which lower the surface tension of the water. In its turn, glycerol retains water molecules, preventing the water from quickly evaporating and making the walls of the soap bubbles stronger. Your homemade soap bubble mixture is ready!
A similar experiment is included in the “Nutrients” set from the MEL Chemistry subscription.