The experimental results The color of the flame caused by transition elements. It is concluded that compounds of the transition metals are used as components of the wick. When lit, the colors are different. CuSO_4 the green KNO_3 a purple and NaSO_ (4) to orange by trial comparing the use of candles by
melting of the three substances. The solvent water and HCl wick to the color of the flame to the most obvious. Candlewick the solvent with HCl so solutes solvent HCl and then used to make candles. To the color of the flame over substance with water as solvent HCl gives elemental transition ignited a long time.
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