Combustion Reactions

1
Combustion Reactions
2
Combustion Reactions

• Aim
• To find out how much heat is in a candle.
• One way to find out is to measure how much wax
  is burnt while raising the temperature of water
  in a test tube by say 200C.

3
Materials Method

• Tea light candles
• Thermometer
• Retort stands with two clamps
• Measure and record the mass of the candle.
• Set the equipment up as shown and measure and
  record the temperature of the water.
• Light the candle, and wait for the temperature to
  rise 10 or 20 0C.
• Measure and record the new mass of the candle.
• Calculate the change in mass of the candle.
• Divide the temperature rise by the change in mass
  to give a value with units of 0C/g wax
• Compare your results with the rest of the class.
• Safety Considerations

4
Results
Mass of candle (g) Temperature (0C)
Start
End
Difference
0C/g

Other Observations

Word equation
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