My experiment was a combination reaction. The reactants were Zinc and Iodine, and the product was Iodine gas. The balanced equation is as follows.

_{Materials Needed}

1. _{4 grams of iodine crystals}
2. _{1 gram of zinc shavings}
3. _spatula
4. _{watch glass}
5. _{water dropper (containing water)}
6. _{mortar and pestle}
7. _{safety equipment: goggles, apron, and gloves}
8. _{fume hood, or well ventilated area}
9. _scale

Procedure

1. Weigh out correct amounts of zinc and iodine.
2. Grind up iodine crystals in mortar.
3. Put ground up iodine and zinc in watch glass and stir using spatula.
4. Put watch glass in fume hood.
5. Slowly drop water into watch glass and watch for reaction.
6. Avoid breathing fumes, their toxic.

This experiment was first performed by Andreas Marggraf. Andreas was a German chemist who lived from 1709 to 1782. He is also well known as his work as an analytical chemist. He was the first to prove that magnesia, lime, and alumina are all distinct earths. He is best known for isolating zinc in 1746 and discovering sugar in beets during 1747. He also was the director of the chemical laboratory of the Berlin Academy of Sciences from 1754.

Scientific: Andreas Marggraf was the first to isolate zinc.

Social: The University of Princeton was chartered.

Cultural: The English Pelham government resigned.