Atomic history

democritus

•  Atoms are made of a single material 
• Also formed into different shapes and sizes

Atomos

John Dalton

• Atoms can't be created, divided, or destroyed
• Atoms join together to make new things
• All substances are made of atoms
• Atoms of the same element are exactly alike 

JOhn dalton

J.J. Thomas

• There are small particles inside an atom

Pium-Pudding Model

Ernest rutherford

• discovered the nucleus inside the atom

RUTHERFORDs atom

• considered mostly empty space 
• tiny part made of highly dense matter

Niels bohr

• Electrons can jump form level to level

Bohrs Atom

Electron cloud

• Schrodinger & Heisenberg created the Electron cloud 

Electron CLoud

• electrons rotate around the nucleus of an atom