1. The document provides instructions for creating a chemical reaction that produces oxygen-filled foam. 2. It lists the necessary materials including hydrogen peroxide, sodium iodide solution, liquid soap, food coloring, and safety equipment. 3. The instructions describe mixing 20mL of hydrogen peroxide with dish soap and food coloring, then adding sodium iodide solution to cause a rapid reaction that produces large amounts of brown-tinted foam.

1. MariaJose Bravo #6
• Hydrogen peroxide (30%) Daniela Hernández # 14
• Sodium iodide solution, 2 Valeria López # 16
M or Potassium iodide Alejandra Lozano #17
solution, 2 M Mariajose Quintanilla #21
• Liquid soap
• Food coloring
• Graduated cylinder (500
mL)
• Safety glasses
• Rubber gloves for clean-
up
MariaJose Bravo #6
Daniela Hernández # 14
Valeria López # 16
Alejandra Lozano #17
Mariajose Quintanilla #21

2. 1. The first step is to put on your safety
glasses.
2. Measure 20 mL of the 30% hydrogen
peroxide into the graduated cylinder.
Mix two solutions It's best to place the cylinder in a
together and you get large tray to make the clean-up as
easy as possible.
an amazing eruption 3. Add a squirt (that's a technical term
of oxygen-filled foam meaning about 5 mL) of dish soap to PHOTOS OF US DOING
the graduated cylinder containing
that looks like a giant the 30% hydrogen peroxide. THE PROJECT
stream of 4. Add a few drops of food coloring to
spice things up.
toothpaste... or 5. The last step is to add 5 mL of the
elephant toothpaste 2M sodium iodide solution (2M
refers to the molarity of the
solution). The reaction takes place
quickly, so it's important to stand
back.
6. You'll notice that the foam has a
brown tint. This is due to the
presence of free iodine produced by
the extreme oxidizing power of the
30% hydrogen peroxide.