EXP-69

Oil Blob Dance

Watch an oil blob dance between two different liquids!

What you need

A clear drinking glass or plastic cup, 1/2 cup of water, 1/2 cup of rubbing alcohol, Cooking oil and an Eyedropper.

What to do

Watch an oil blob dance between two different liquids! Here’s what to do:

  1. Pour the water into the glass.

  2. Tilt the glass slightly and slowly pour in the rubbing alcohol. Don’t shake the glass, or the two liquids will mix.

  3. Fill the eyedropper with the cooking oil and lower the tip into the layer of rubbing alcohol, but not into the water.

  4. Squeeze out a couple of drops of the oil, and watch the oil blobs dance!

What’s happening

The oil is lighter than the water but heavier than the rubbing alcohol. So the oil blobs float between the two liquids.

Note:

Use adult supervision with the rubbing alcohol.