Observing the structure of the flame in Combustion, Fuels and Flames – Class 8 Science Experiment

Chapter Name: Combustion, Fuels and Flames

Activity Name: Observing the structure of the flame in Combustion, Fuels and Flames

Activity Description:

Observing the structure of the flame in Combustion, Fuels and Flames - Class 8 Science Experiment

In this experiment, we will observe the structure of the flame produced by a wax candle. By carefully noting the different colored zones in the flame, we will determine the number of colors present in the flame.

Additionally, we will observe the innermost dark zone and the blue zone near the base of the flame, where different combustion processes take place.

Required Items:

  1. Wax candle
  2. Lighter or matches

Step by Step Procedure:

  1. Set up the experiment in a safe and well-ventilated area.
  2. Light the wax candle using the lighter or matches.
  3. Observe the flame carefully from the bottom to the top.

Experiment Observations:

  • Note the different colored zones in the flame.
  • Count the number of colors present in the flame.
  • Observe the innermost dark zone of the flame.
  • Observe the blue zone near the base of the flame.

Precautions:

  1. Perform the experiment under adult supervision.
  2. Keep flammable materials away from the experiment area.
  3. Handle the lit candle with care to avoid accidents or burns.
  4. Conduct the experiment in a well-ventilated space to avoid inhaling the candle’s smoke.

Lesson Learnt from Experiment:

Through this experiment, we learn about the various zones in a flame produced by a candle. The different colored zones indicate different stages of combustion and oxidation of the wax. The innermost dark zone is where vaporized wax is present but not combusting due to lack of oxygen. The blue zone near the base of the flame indicates complete combustion of vapourized wax in the presence of sufficient oxygen.

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