Fire Assaying Model

The Activity: Materials

For each student:

Clear, 16-ounce empty water bottles with lids, 2 per group
Pulverized dirt sample or fine silt and clay from outside
Calcium oxide (CaO) (lime), about a match-head sized bit will be used for the experimental bottle
Plastic spoon to pick out the bit of calcium oxide
Aluminum sulfate solution prepared as above, 25 milliliters per group

The Activity: Materials