# Compare The Burning Speed Of Scented And Unscented Candles

*Register to read the introduction…*The three types of candles are labeled according to their scents and numbered from 1 to 5 for each type. Their total length and diameter is measured using a ruler and caliper for comparison. Any candle found to have a deviation of more than 1 mm in diameter is replaced with a new candle. All of the candle heights are recorded.

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All 15 candles are lighted up and the stopwatch is started. After 30 minutes, the candles are snuffed out in the same order that they were lighted up earlier. The lengths of all the 15 candles are measured once more using the ruler.

4. The length of candle that was burned up in the 30 minutes is calculated by deducting the final length of the candle from its original length. The results are recorded in the table given below.

Observation

The length of candle that was burned in 30 minutes is almost the same for all 3 types of candles. All candles became shorter by 25 to 30 mm in 30 minutes. The average length of candle burned was around 27mm. Candle type | Average length of candle burned in 30 minutes (mm) | Average (mm) | | 1 | 2 | 3 | 4 | 5 | | Apple scent | 28 | 27 | 29 | 25 | 27 | 27.20