- Take a few gramms of salts of lithium, sodium, potassium, strontium, barium, magnesium, copper(II). You also may take boric acid.
- Take as many Petri dishes as you use reagents (you may use another type of thermostable glassware).
- Put a few grams of each reagent in individual Petri dishes.
- Pour some alcohol (methyl, ethyl or iso-propyl) into each dish.
- Ignite alcohol in the dishes.