Write an activity to test the presence of carbon particle in the luminous zone.

This topic gives an overview of;

Flame

Structure of Flame

Flame

A hot glowing body of ignited gas that is generated by something on fire is called Flame. Kerosene oil and molten wax are substances that give a flame while burning.Wood and charcoal are substances that do not vaporise, but still burn, without any flame.

Observe an LPG flame. Can you tell the colour of the flame

Recall your experience of burning a magnesium ribbon in previous classes. Record your observations and mention whether on burning the material forms a flame or not.Materials forming Flame on Burning

S.No.MaterialForms flameDoes not form flame

1Candle  Forms flame  

2Magnesium    Does not form flame

3CamphorForms flame  

4Kerosene StoveForms flame  

5CharcoalForms flame  

Structure of a Flame

Light a candle (Caution : Be careful). Hold a glass tube with a pair of tongs and introduce its one end in the dark zone of a non-flickering candle flame. Bring a lighted matchstick near the other end of the glass tube. You will see the flame. Notice that the wax near the heated wick melts quickly.

Explanation:

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa