Early Atomic Theory and Structure

Dalton's atomic model

  Dalton's model was that the atoms were tiny, indivisible, indestructible particles and that each one had a certain mass, size, and chemical properties that were determined by what kind of element they were.

Dalton's Atomic Theory

1.  Matters/ Elements are made up of extremely small particles called atoms.
2. Atoms cannot be created, destroyed, or divided as they are the smallest particles of matter.
3. Chemical reaction of elements is a rearrangement  of atoms.
4. All atoms of a particular element are identical.
5. Atoms of different element are different from each other and can be identified by their relative weights, (atomic weight).
6. Atoms of different elements can combine in a chemical reaction to form chemical compounds in fixed ratios. ( That means that no matter how much of two or more elements are used in a reaction the ratios of the final chemical compound would remain fixed.)

Posted in: Chemistry