SMOKE BOMB

Materials

•Potassium nitrate•Sugar (sucrose or table

sugar)•Chemicals Used to Color

Flames

•Red - strontium salts•Orange - calcium chloride

Yellow - sodium nitrate•Green - barium salts, such

as barium nitrate

Apparatus•Hotplate•Satay Stick•Aluminum foil•Lighter•Mould•Wick•Lighter

Procedures

• Add sugar to potassium nitrate in the ratio of 2:3 on a piece of aluminum foil.

• Add chemical that colour the flame, sparingly.

• Heat the mixture on a hotplate on low heat.

• Stir the mixture well using a satay stick.

• When the mixture turned brown, take it off the heat and wrap the mixture with that aluminum foil.

• When it has hardened – takes about 10minutes – light it up and coloured flames will be produced.

Chemistry Behind

• Sugar – fuel• Potassium nitrate- oxidizer • Salt- organic dye

• 48NaNO3 + 5C12H22O11 - 60CO2 + 55H2O + 24N2 + 24Na2O