candle experiment

When we did an experiment about candle our follow up was to find out why black stuff appeared on the plate if you put the candle under it, here is my explanation.

The black stuff that turns up on the plate is actually called soot from the unfinished burning of the fuel, this can be caused by several factors. Two of those factors are the balance between the wax and the wick in the candle leading to disturbing the flame. The fuel to the candle flame is the liquid wax which is being drawn up through the wick.When too much fuel is presented to the flame it is not all burned.  The excess fuel is put off in the form of soot.