How did dalton describe the relationship between atoms and elements?

Who was the man who lived from 460 B.C to 370 B.C and was among the first to suggest the idea of atoms? According to Dalton, what happens to atoms during a chemical reaction? How did Dalton describe the relationship between atoms and elements? ... (Dalton's atomic theory) Atoms of the same element are always identical. read more

The main points of Dalton's atomic theory are: Elements are made of extremely small particles called atoms. Atoms of a given element are identical in size, mass and other properties; atoms of different elements differ in size, mass and other properties. Atoms cannot be subdivided, created or destroyed. read more