During this long process of the discovery the atom, took many models and scientists. The entire group of scientists who assisted in the discovery of the atom used each other’s model to improve each other’s theories. Firstly, John Dalton showed that, collectively, the three laws, the law of definite proportion, the law of conversation of masses, and the law of multiple proportion.

These three laws demonstrate the existence of the atom. Also, Using these three laws he developed a theory called, Dalton’s Atomic Theory. This includes five basic principles; 1) all matter is made of indivisible and indestructible atoms, 2) atoms of a given element are identical in their physical and chemical properties, 3) atoms of different elements have different physical and chemical properties, 4) atoms of different elements combine in simple whole-number ratios to form chemical compounds, 5) atoms cannot be subdivided, created or destroyed when they are combined, separated, or rearranged

Some topics in this essay:
Duality Theory, Atomic Theory, JJ Thompson’s, John Dalton, JJ Thompson, Niels Bohr, Helping Bohr’s, Ernst Rutherford, Atom Throughout, Bohr Plank, electron cloud, discovery atom, atom scientists, model electron cloud, gold foil sheet, chemical properties, physical chemical, gold foil, bohr’s model, existence atom, stand rungs, person stand rungs, physical chemical properties, alpha particles, current model electron,