Atomos-Indivisible

The theory states that atoms are all individually created and cannot be separated, no matter what scientific procedures are applied.

Conservation of Matter

Matter cant be created or destroyed

Law of Definite proportions

the relative amount of each element in a particular compound is always the same, regardless of preparation or source

Atomic theory

 1. Elements are made of atoms

2. Atoms of each element are identical. Isotopes contradict theory

3. compounds are formed when atoms combine. Each compund has a specific # of kinds of atoms

4. Chemical reactions are rearangement of atoms. Atoms cant be created or destroyed. Atoms now can be destroyed 

Gold-foil experiment 

Discovered Nucleus

and thats its positive

Planetary Model

Discovered electrons orbit nucleus in rings (like planets orbit the sun

Oppinheimer 

(inspired by Einsteins E=mc³⁾

Manhattan Project

Atom bomb