Science Project Summary:

Comparing the burning speed of scented and unscented candles

Featured science projectScience project video Intermediate 6 < 1 day $25-$50 Readily available [+] More info
Difficulty: Intermediate 6
Cost ($): 30
Time required: < 1 day
1 hour to prepare, 1 hour for the science project experiment
Availability of materials: Readily available
Easily found. Candles can be purchased at a supermarket or department store.
Required Skills: None
Safety concerns:

Be careful when handling fire. Ensure that the experiment is conducted in a well-ventilated laboratory or in a safe location, with no flammable materials lying around. Adult assistance is required.

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This experiment was performed to compare how quickly a scented and an unscented candle will burn. The tests were done by comparing the length that the candles will burn in 30 minutes - using unscented, rose scented and apple scented candles.
Procedure preview:
1. For this experiment, the independent variable is the type of candle used – unscented, rose scented and apple scented. The dependent variable is the reduction in the candle’s length after 30 minutes. This is determined by measuring the height of the candle before and after allowing it to burn for 30 minutes. The constants (control variables) are the length of the candle, the diameter of the candle, the allowed burn time and the room temperature. 2. The three types of  candles are labeled  according to  their scents and  numbered   from 1 to 5 for each type. Their total length .....