The five main ideas of Dalton's
1. Elements are composed of extremely small particles called atoms that are indivisible and indestructible.
2. All atoms of a given element are the exact same they have the same size, mass and chemical properties.
3. Atoms of 1 element are different from the atoms of all other elements.
4. Compounds are composed of atoms of more than 1 element the relative number of atoms of each elements in a given compound is always the same.
5. Chemical reactions only involve the rearrangement of atoms. Atoms are not created or destroyed during chemical reactions.