Combustion Reactions.

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Presentation transcript:

Combustion Reactions

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.

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

Results Mass of candle (g) Temperature (0C) Start End Difference 0C/g Other Observations Word equation 