56 PROPERTIES AND MAKE-UP OF MATTER 



wounds. But 

 neutral substances 

 will do none of 

 these things. 



A strong base 

 like lye is just as 

 dangerous to 

 handle as a power- 

 ful acid. It is 

 well to bear in 

 mind then that 

 bases and acids 

 counteract or 

 neutralize the de- 

 structive effects 

 of each other. If 

 lye is spilled on 

 the hands or 

 clothing, vinegar 

 or lemon juice 

 should immedi- 

 ately be applied 

 to neutralize the 

 base. If acid is 

 spilled, ammonia 

 water is the safest 

 base to counter- 

 act it since it will 

 do the least harm 



Courtesy of The Procter and Gamble Company if tOO much is USed . 

 KETTLE USED IN MANUFACTURE OF SOAP E verv housewif e 



This kettle is 16 feet in diameter, three stories high, 



and it holds about 375,000 pounds of soap. KUOWS that am- 



