Elephant's toothpaste

Summary:

Video instructions detail how to perform this reaction. 

Materials needed:

• Hydrogen peroxide H ₂ O ₂ (30%) - This is ten times stronger than normal hydrogen peroxide you can find in stores
• Sodium iodide NaI solution, 2 M
• Soft soap
• Food coloring
• Graduated cylinder (500 mL)
• Safety glasses
• Latex gloves for clean-up

1. The first step is to wear your safety glasses.
2. Measure 20 mL of 30% hydrogen peroxide into a measuring cup. It's best to place the cylinder in a large tray to make clean-up as easy as possible.
3. Add squirt (a technical term meaning approximately 5 mL) of dish soap into a measuring cup containing 30% hydrogen peroxide.
4. Add a few drops of food coloring to the things spice.
5. The last step is to add 5 mL of sodium iodide 2M (2M refers to the molarity of solution). The reaction is rapid, so it is important to stand back.
6. You will notice that the foam has a brown tint. This is because of the free iodine produced by the oxidation of the extreme power of 30% hydrogen peroxide.