90 LABORATORY LESSONS IN GENERAL SCIENCE 



FIRES, AND BURNS 



1. Recall from the lesson on Combustion the relative 

 ease with which kerosene and gasoline ignited, and restate 

 the reason for it. 



2. What is meant by (a) explosive vapors; (6) inflam- 

 mable gases? Under what conditions will explosions of 

 gases occur? Explain the destructiveness of an explosion 

 of gas. Why oftentimes is there an instant spread of fire 

 accompanying the explosion? Why not use water to ex- 

 tinguish burning oil ? What material likely to be at hand in 

 the kitchen may be used ? 



3. What, as a physician sees it, is the nature of burns? 

 What is the usual treatment for them? What is a blister? 

 How proceed to drain out the fluid of a blister ? 



4. Why are results so likely to be fatal when a large 

 area of the body surface is seriously burned ? What treat- 

 ment will allay the torment from the irritated nerve ends of 

 the burned area ? 



5. What is meant by internal burns, and why are they 

 likely to prove fatal? What is meant by being suffocated 

 by smoke? What is a wise precaution when compelled to 

 grope one's way through smoke ? 



6. Explain the explosion when kerosene is poured upon 

 hot coals in a stove. What precautions should be taken when 

 using gasoline at home to clean clothing? In case one's 

 clothing catches fire at any time, why is it usually better 

 (a) not to run ; (6) not to stand erect ? 



7. When may illuminating gas at the kitchen range 

 become a source of danger ? What danger is ever present in 



