Potassium Iodide and Lead Nitrate Percipitation (Erango)

Author

Erango Kelbisow

Principle(s) Illustrated

1. Precipitation

2. Colors

3. Solutions

Standards

• PS1. B - Chemical Reactions

• Chemical processes are understood in terms of collisions of molecules, rearrangement of atoms, and changes in energy as determined by properties of elements involved.

Materials

- Food Coloring

- Potassium Iodide

- Lead Nitrate

Prior knowledge & experience:

Mixing the primary colors creates other colors

When clear is mixed with clear the liquid should still be clear

Root question:

Why does the liquid turn yellow?

Target response:

Chemical reactions change a substances visibility

Common Misconceptions:

If you cannot see it in the beginning of the reaction you will not be able to see it at the end