Why is the atomic theory important?

Dalton's theory can be called modern because it contained statements about atoms that could be tested experimentally. ... In chemical reactions, atoms combine with or separate from other atoms. In chemical reactions, atoms combine with each other in simple, whole-number ratios to form combined atoms. read more

As we know that atoms are the building block of the universe and so it is very important to know about the structure of atom so that we can understand and explain the matter, properties of matter and reaction/change between matter and atomic theory is one of the step to understand matter that taken by chemist and physicist. read more

Atoms are important because they form the basic building blocks of all visible matter in the universe. There are 92 types of atoms that exist in nature, and other types of atoms can be made in the lab. read more