John Dalton was always very interested in meteorology, which steered him to wonder about gases and their components. His escalating curiosity about these gases led him to discover the Atomic Theory. The Atomic Theory 1. All matter consists of tiny particles 2. Atoms are indestructible and unchangeable 3. Elements are characterized by the mass of their atoms 4. When Elements react, their atoms combine in simple, whole-number ratios
3. Elements are
characterized by the mass of their atoms
4. When Elements
react, their atoms combine in simple, whole-number ratios
Dalton's Model of the Atom
As you can see, Dalton's model does not contain protons, neutrons, or electrons, nor does it have a nucleus. He believes that everything was simply made of tiny particles, and nothing else.