THE POWER OF A BUNSEN BURNER AIM OF THE
CRIMINAL INVESTIGATION POWERS BILL EXPOSURE DRAFT CRIMINAL5TH MEETING CHAPTER 2 THE POWERFUL INFLUENCE OF
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Power of a Bunsen burner
The power of a Bunsen burner
AIM OF THE EXPERIMENT
The aim of this experiment is to measure the power of a Bunsen burner.
Y
OU
WILL NEED
A
Bunsen burner a heat resistant mat an aluminium saucepan (or
similar) a stopwatch or stopcock a tripod a thermometer (-10 to
100oC) and some water.
WHAT TO DO
Measure the mass of your aluminium saucepan.
Fill it with about 1000 cm3 of water.
Measure the mass of the saucepan and the water.
Calculate the mass of water.
Take the temperature of the water.
Place it on the tripod, light the Bunsen and start the stopwatch.
Record the temperature of the water after a convenient period. The exact time will depend on the Bunsen that you are using but to get a reasonable temperature rise you will need to heat the water for about five minutes.
Record the time of heating (in seconds) and the final temperature of the water.
Work out the temperature rise.
Calculations
Calculate the heat energy input from:
Heat energy = mass of water x specific heat capacity of water x Temperature rise
(Specific heat capacity of water = 4200 J/kgoC).
Work out the power of your Bunsen from:
Power = Heat energy supplied/time taken
Questions:
1. What have you ignored in your experiment?
2. How could you have made the experiment more accurate?
3. Why is it important not to have too big a temperature rise?
4. Why is it important not to use a saucepan that is too heavy?
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Tags: bunsen burner, your bunsen, burner, power, bunsen
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