310 ELEMENTARY GENERAL SCIENCE CH. xxn 



12. In the above question does the particular acid employed affect 

 the result? Describe experiments to prove the truth of your 

 answer. 



13. If you were given some nitric acid and some caustic potash, 

 describe exactly how you would proceed in order to obtain large 

 crystals of nitre. 



1 1. What are hydroxides ? Give examples of metallic hydroxides. 

 What products are formed when these hydroxides react with 

 acids ? 



