Our world is made up of atoms, yet the atomic model of the universe is nonetheless considered a "theory." When scientists know beyond all reasonable doubt that a particular principle is the case, then it is dubbed a law. Laws address the fact that certain things happen, as well as how they happen. A theory, on the other hand, attempts to explain why things happen. By definition, an idea that is dubbed a theory has yet to be fully proven, and such is the case with the atomic theory of matter. After all, the atom cannot be seen, even with electron microscopes—yet its behavior can be studied in terms of its effects. Atomic theory explains a great deal about the universe, including the relationship between chemical elements, and therefore (as with Darwin's theory concerning biological evolution), it is generally accepted as fact. The particulars of this theory, including the means by which it evolved over the centuries, are as dramatic as any detective story. Nonetheless, much still remains to be explained about the atom—particularly with regard to the smallest items it contains.

User Contributions:

What is the relationship between atoms, protons,
neutrons, and electrons? I seem to be having problems finding the obvious answer for my biology 2 questions and I NEED HELP!!!

thats a good thing to know more about atom and.
I study that atom is smallest partical of any element and can,t seen by microscpe even by electronic microscope is there any person do an invention to see it ...
Due to the images created with scanning tunneling microscopes, is it now correct to say that atoms are real and are distinct particles of an element? Therefore, atoms are no longer considered theory though their appearance cannot be visualized.

Comment about this article, ask questions, or add new information about this topic: