Here are the main points of Dalton's atomic theory:
* All matter is made up of tiny, indivisible particles called atoms.
* Atoms of a given element are identical in size, mass, and properties.
* Atoms of different elements are different in size, mass, and properties.
* Chemical reactions involve the rearrangement of atoms.
* Atoms are neither created nor destroyed in chemical reactions.
Important Note: While Dalton's theory was a significant step forward, it wasn't completely accurate. It was later revised and expanded upon by other scientists, leading to the modern atomic theory we have today.
For example, we now know that atoms are *not* indivisible (they are made up of subatomic particles like protons, neutrons, and electrons) and that atoms of the same element can have different masses (isotopes).
