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Flame

Combustion and Flame
Chemistry
Class 8

Overview

To outline different zones of a flame as luminous and non-luminous and demonstrate it; Identify materials that burn without a flame and colour of flame produced in burning of candle and coal

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Flame
4 min

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Flame and its Structure

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Related Questions to study

Explain the different zones of a candle flame.

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Mrs. Anita Pandey observed that her cooking utensils are becoming black in colour and the flame of her gas stove is yellowish in colour. She complains about it in the gas company and got the gas stove repaired.
Answer the following question based on the above situation:
What can be the reason for this sooty flame?

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What is indicated by the blue flame of a bunsen burner?

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If you watch a burning candle carefully, you will find different colurs in the flame. Which is the hottest part of the candle flame?

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The hottest region of Bunsen flame shown in the figure below is:

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Match the following for the flame of a candle
Column AColumn B (zone) Column C (colour)
(a) hottest part 
(i) innermost zone 

(x) blue of
unburnt wax vapours

(b) moderately hot (ii) middle zone of (y) black partial
combustion
(c) least hot (iii) outer zone of (z) yellow

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Innermost zone is the _______.

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The substances which vapourise during burning, give flame.

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Artificial rubies and sapphires can be made by heating alumina in ?

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What is indicated by sooty flame?

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