CONTENTS 



INTRODUCTION 



Chemistry in its relation to plant and animal life ; Relation to 

 other sciences ; How to study chemistry ; Reference books and how 

 to use them ; Importance of chemistry. Pages v-viii. 



CHAPTER I 



Composition of Matter. Physical and chemical changes ; Inde- 

 structibility of matter ; Molecules ; Atoms ; Elements ; Com- 

 pounds ; Chemical affinity ; Mechanical mixtures ; Chemical anal- 

 ysis and synthesis ; Summary. Pages 1-7. 



CHAPTER II 



Properties of Elements and Compounds. Physical properties ; 

 Chemical properties ; Symbols of the elements ; Formulas of com- 

 pounds ; Atomic weights ; Molecular weights ; Law of definite 

 proportion ; Valence ; Combination of elements ; Problems on 

 combination of elements; Experiments and questions. Pages 8-18. 



CHAPTER III 



Laboratory Manipulation. Importance of laboratory practice ; 

 Names and uses of apparatus ; Cutting glass tubing ; Bending glass 

 tubing ; Perforating corks ; Weighing ; Measuring liquids ; Obtain- 

 ing reagents from bottles ; Filtering ; Laboratory note-book ; 

 Breakage of apparatus ; Care of sinks and plumbing ; How to ac- 

 complish the best results in the laboratory. Pages 19-30. 



CHAPTER IV 



Oxygen. Occurrence ; Preparation ; Properties ; Importance ; 

 Problems, experiments, and questions ; Part taken in plant and 

 animal life. Pages 31-36. 



CHAPTER V 

 Hydrogen. Occurrence ; Preparation ; Properties ; Importance ; 



