CONTENTS vii 



PAKT II. CHEMISTRY 



CHAPTER VIII 



OUTLINE OF CHEMICAL STUDY 



PAGES 

 Scope of Chemistry. Chemical Changes. Composition and 



Decomposition. Elements, Compounds, and Mixtures. 

 Atoms. Chemical Affinity. Symbols. Classes of 

 Substances : Acids ; Bases ; Metals ; Salts ; Oxides ; 

 Minerals; Ores; Alloys; Solutions 171-191 



CHAPTER IX 

 COMMON SUBSTANCES 



Elements: Oxygen; Hydrogen; Nitrogen; Carbon; Sulphur; 

 Phosphorus ; Chlorine ; Iron ; Other Metals. Com- 

 pounds: Water; Sulphuric Acid; Carbon Dioxide; 

 Ammonia; Cellulose; Starch; Sugars; Alcohol; Fats 

 and Oils ; Soap. Mixtures : Air ; Soil ; Glass ; Wood ; 

 Paper; Coal; Illuminating Gas; Petroleum; Explosives; 

 Foods; Fuels 192-220 



CHAPTER X 

 COMMON CHEMICAL PROCESSES 



Combustion. Explosion. Flame. Oxidation. Oxidation in 

 Animal Bodies. Decay. Fermentation. Bread Making. 

 Disinfection . . 221-230 



