STATEMENT No. 7. 



The combination and re- combination of atoms is called 

 by the chemist u chemical reaction" 



WITH us there is no chemical reaction. It is a term 

 used by the chemist as part of his craft. Through the 

 division of labour, the chemist looks upon chemical re- 

 actions upon atoms and molecules, their inherent 

 energies, their likes and dislikes, as if they were part 

 of his special property. We shall not take the views of 

 the chemist, we shall look at the whole as part of one 

 huge Cosmos called Nature. It is enough for us to know 

 that the chemist wholly recognizes this combining and 

 re-combining of atoms, and that it is the foundation of 

 his science. The facts point to the definite conclusion, 

 that there are special classes species of atoms, 

 hydrogen atoms, oxygen atoms, and so forth. We only 

 want to recollect that there are these species, and that 

 it is these species of objects which form everything we 

 see, i.e. mass. We want also to recollect thafc the 

 combining and re-combining to form molecules is 

 always in a definite order. A torn A and atom B unite 

 to form one molecule called C (= AB). Present to this 

 molecule C (== AB) an atom D under certain conditions 

 of what is called temperature, and the molecule C will 

 set free the atom A, and B will combine with D to 

 form a new molecule (BD) which we will call E. 

 And this simple idea of combination or addition of atom 



