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1. Do this step only under adult supervision.
Hold a lit match to the base of the candle. Drip some melted wax into
the centre of the tuna can. While the wax is still soft, push the base
of the candle into it, so that the candle stands up in the centre of
the can.
2. Light the candle.
3. In the bowl put one tablespoon of baking
soda and three tablespoons of vinegar. This will bubble and produce a
gas.
4. Slowly pour the gas (but
not the vinegar and baking soda!) over the candle flame. Make sure all
of the vinegar and baking soda stay in the bowl.
5. Did the flame go out? If not, rinse out
the bowl and try mixing a fresh batch of ingredients.
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