EXERCISE 25 



DO THE PARTS OF THE FLAME DIFFER IN HEAT? 



Materials. Flame of a candle; white paper. 



Directions. Hold a piece of white paper stretched horizontally between the two hands, and 

 quickly thrust it into the flame in such a position that the center of the paper is just above 

 the wick. Hold it there until the paper begins to char, and then quickly remove it before it 

 catches fire. 



Examine the mark which the flame has made upon the paper, and state your conclusion 

 regarding the relative heat of the inner and middle zones. Do you think that there is any 

 burning taking place in the inner zone ? If not too much charred, the paper may be pasted 

 in your notebook as an illustration. 



Additional problems. Hold a match or a straw across the flame for a moment; then remove and see 

 where the match or straw is burned. 



See if you can quickly put a match head into the central part of a Bunsen flame and hold it there 

 for a moment without lighting it. 



[31] 



