The Floating Iron!

TDIY0015

How detergents help in reducing surface tension?
  • 2 beakers 80-100 ml
  • Liquid soap
  • Iron powder
  • Spatula
  • Gloves
  • Tissue
Take two beaker with the same amount of water in them and add soap in one of the beakers and mix it well. Now take the iron powder in the spatula and sprinkle the powder onto the beakers. See in which one of them iron settles down quickly.