STEM SOS PBL Level 3 Old Foamy

In this activity, you will mix hydrogen peroxide, sodium iodide solution, and dish-washing liquid in a tall cylinder and observe enormous soapy foam erupt!

Question:
What reaction(s) do we observe after mixing hydrogen peroxide, sodium iodide solution, and dish washing liquid and creating enormous soapy foam to erupt? 

Old Foamy STEM SOS PBL Level-3