When we burn a magnesium ribbon, it burns by producing a flame

 

Magnesium Ribbon Burning.jpg

 

A flame is a region where combustion of gaseous substance takes place.

 

kerosene-lamp---bunsen-burner---candle---teachoo.jpg

 

Some substances burn by producing flames - like LPG, wax, magnesium.

Some burn without producing flame - like coal

Coal burning without flame.jpg

 

Note : Wax and kerosene lamps have wicks. Molten wax and kerosene oil rise through the wick, get vaporized on burning and form flames. The substances which vapourise on burning give flames.

 

The type of flame depends on amount of oxygen available for burning the fuel

  • If oxygen supply is less, color of flame is yellow
  • If oxygen supply is sufficient, color of flame is blue

Blue Flame and Yellow Flame.jpg

Let’s see the structure of a candle flame

  1. Class 8
  2. Chapter 6 Class 8 - Combustion And Flame

About the Author

CA Maninder Singh's photo - Founder at Teachoo
CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo