Effect of Room Temperature on the Burn-Rate of a Candle Burns

967 Words Jan 6th, 2013 4 Pages

Have you ever wondered whether a candle burns more quickly on a hot day, than on a cold day? Or is it the other way around? This science fair project was carried out to compare how quickly a candle will burn at different room temperatures. The experiment was done by measuring how much of a candle will melt in 30 minutes when placed in an environment with surrounding temperatures of 20°C, 25°C and 30°C.
A candle in a colder room will burn more slowly.

Candles are used to provide light when there is no electricity available or during power failures. Candles are also used to create a romantic setting at restaurants. Most candles are made of paraffin
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4. The air conditioner is switched off and the room temperature is allowed to rise to 25°C. You may need to turn on the heater to achieve this temperature. The temperature of the room is verified with the thermometer . Procedure 3 is repeated using the candles marked “B1” to “B5”. The reduction in candle length after 30 minutes is calculated and recorded in the table shown below. You may need to air the room to get rid of the candle smoke, before proceeding to step 5.

5. The heater is turned on in the room until the room temperature reaches 30°C. The temperature of the room is verified with the thermometer. Procedure 3 is repeated with candles marked “C1” to “C5” and the reduction in the candle length after 30 minutes is calculated and the results recorded. in the table below.
The length of the burnt away in 30 minutes is almost the same at all 3 different room temperatures. Room temperature Average length of candle burnt in 30 minutes (mm) 1 2 3 4 5
20°C 27 26 25 28 26
25°C 28 25 27 28 25
30°C 28 24 26 29 25
The graph below represents the results of our science experiment:

The hypothesis that a candle in a colder room will burn more gradually/slowly is disproved. All of the candles burned at almost the same rate regardless of the surrounding temperature.
Also consider
This science fair project can also be varied to compare the burn rate of candles made from different materials like soy wax or animal fat.

Try to repeat the

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