What changes take place when a candle burns?

Answer 1

During the combustion of a candle, oxygen combines with the hydrogen and carbon, to produce the products of energy, carbon dioxide and water. The oxygen for the reaction comes from the atmosphere and the initial heat source comes from a match. The candle is a hydrocarbon so the hydrogen and carbon for the reaction comes from the wax and wick. The heat energy from the reaction is released when bonds between the carbon and oxygen and hydrogen and oxygen are formed. The reactants during the combustion of a candle are oxygen, carbon, and hydrogen and thermal energy. The products are thermal energy, carbon dioxide, and water.

Answer 2

When a candle burns, the wax melts and is drawn up the wick by capillary action. The heat from the flame vaporizes the liquid wax, which mixes with oxygen in the air to produce carbon dioxide and water vapor. The flame emits light and heat energy as a result of this chemical reaction.

Answer 3

Candles are made from paraffin or another similar wax. Waxes are just hydrocarbons (like like methane, propane, or octane) only with more carbon atoms in their chain. Waxes typically have chains in the 20-40 carbon range. Like all hydrocarbons, paraffin combusts to form CO2 and H2O. However, if you pay close attention to what the candle is doing, it is much more interesting than a simple combustion reaction. When you light a candle, the first thing that happens is that the wick burns---the braided cotton ignites and starts to burn, but once the heat from the wick is sufficient to start melting and then vaporizing the wax, it is the wax that starts to combust since it burns at a lower temperature than the wick. Capillary action continues to feed the wick with more melted wax that vaporizes and burns as it gets to where the flame is located. As the wax source gets farther and farther from the top of the wick, the capillary action is no longer able to beat gravity and so the wick eventually either carbonizes from lack of oxygen and breaks off or completely combusts. Sorry to make this so long, but I thought this was a better picture of it than "it makes fire", which was the response that I replaced.

Answer 4

when its burns out the wax will go and where will only be the wick lefted

and when the candle stoped and got a little bit left it will go dead hard

Answer 5

The hydrogen and the carbon dioxide mix. Candle uses oxygen and wax as fuel

Answer 6

the wax burns up and continuosly drips down the wax burns up and continuosly drips down

Answer 7

bro we dont no n dat ennit?? nahidul Islam

Answer 8

The candle melts; also burning, evaporation and thermal decomposition of some components of the candle.

Answer 9

it changes from a solid to a gas.

the colour changes.

Answer 10

the wax melts