Procedure
- Fill a washbasin 3/4 with water.
- Pour 50mL of oil into the washbasin. Allow it to settle.
- Pour 25mL of dish soap into the washbasin. Observe the effects.
- Pour 25mL of vinegar and baking soda into the washbasin. Observe again, taking into account that a previous material had already affected it.
- Allow each cotton ball to skim the surface of the water until each of them can no longer absorb anymore oil/water. Observe the effects.
- Soak the sponge in the water, taking care to keep it near the surface where the oil is. Observe again, taking into account that a previous material had already affected it.