Understanding ignition temperature in Combustion, Fuels and Flames – Class 8 Science Experiment
Chapter Name: Combustion, Fuels and Flames
Activity Name: Understanding ignition temperature in Combustion, Fuels and Flames
Activity Description:
The experiment aims to understand the concept of ignition temperature by comparing the combustion of two paper cups, one with water and one without water, when heated using a candle.
Required Items:
- Two small paper cups, water, tripod stands, candle.
Step by Step Procedure:
- Take two small paper cups.
- Pour water into one of the cups.
- Place the two cups on separate tripod stands.
- Heat both cups simultaneously using a candle flame, following the setup shown in the figure.
Experiment Observations:
- Note which cup burns first.
- Observe whether the water in the cup becomes hot or not, and record the findings.
Precautions:
- Handle the candle flame with care to avoid accidents.
- Ensure a safe distance from flammable materials during the experiment.
- Perform the experiment under adult supervision, especially when involving children.
Lesson Learnt from Experiment:
The experiment demonstrates the concept of ignition temperature, which is the minimum temperature at which a substance starts to combust. The cup without water likely reaches its ignition temperature faster and burns first compared to the cup with water, which remains cooler due to the heat-absorbing properties of water.
