Mr. Piner
Chemistry 5
September 12, 2012
Mathematical Relationship Between Burning Time and Volume of Air
Purpose: To determine the graphical and mathematical relationship between the volume of air available to a burning candle and the time for it to extinguish.
Materials:
50 ml Beaker 600 ml Beaker 100 ml Beaker 1000 ml Beaker 250 ml Beaker Candle 400 ml Beaker Stopwatch Matches
Procedure:
1. Goggles were acquired from the goggle cabinet. 2. The candle was lit and as I placed the 50 ml beaker over the candle, my partner started the stopwatch to record how long the candle burned under the beaker. 3. When the flame extinguished, I recorded how long the flame lasted under the 50 ml beaker. 4. Steps 2 & 3 were repeated for each size of beaker.
Safety:
* Standard lab attire is acquired, including safety goggles. * Take care when working with glass * Take care when working with a lit candle
Data:
50 ml Beaker (seconds) | 100 ml Beaker (seconds) | 250 ml Beaker (seconds) | 400 ml Beaker (seconds) | 600 ml Beaker (seconds) | 1000 ml Beaker (seconds) | 1.42 | 2.98 | 7.36 | 9.32 | 14.76 | 23.62 |
Calculations and Analysis: A graph of the data is provided on a separate sheet. The graph was produced with beaker size (in ml) on the x-axis and time the flame survived (in seconds) on the y-axis.
Conclusion:
This experiment was intended to determine the graphical and mathematical relationship between the volume of air available to a burning candle and the time for it to extinguish. It was found hat the graph of data was a straight line, indicating that the relationship between the volume of air available to a burning candle and the time for it to extinguish are in direct correlation. Wolfram Alpha says that the more air a flame has, the longer it will burn. Therefore, we expected the flame to last longer in the larger beakers. The points in our graph stayed fairly close to our trend