Turn Pennies to Silver and Gold (Chemistry Trick)

Turn Pennies to Silver and Gold (Chemistry Trick)

We turn copper pennies into silver and finally to gold. Obviously it's a chemistry trick but still impressive.

test Introduction to Chemistry

Introduction to ChemistryIntroduction to Chemistry

Self healing hydrogels and its industrial applications

Hydrogels are water-swollen, cross-linked polymeric structures produced by reactions of monomers or by hydrogen bonding. This hydrogels used in various applications .