introduce a clear glass slide Into The Luminous zone of the study candle flame and hold it for a few seconds and then remove it
i) what did you observe on the glass slide
ii) give reasons for the above observation
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Within a non-luminous flame, there are several "zones," each with a different temperature. The hottest part of the flame is in the outermost zone, which is blue in colour. This is the result of complete combustion. Middle zone is yellow and warm.. This is due to incomplete combustion. The innermost zone is the coolest and blackest. This is because unburned wax vapours are present.
Summary
- Flame is a hot glowing body of ignited gas produced by something on fire.
- Fire can be controlled by removing one or more of the requirements for fire production.
- Water is commonly used to extinguish fires.
- Water cannot be used to put out fires caused by electrical equipment or oils.
- A flame has three distinct zones: the dark zone, the luminous zone, and the non-luminous zone.
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