ATOMIC HISTORY

DEMOCRITUS

• Believed that you could reach atomos
• Atomos-impossible to seperate

JOHN DALTON

• Believed that an atom was one thing

J.J.THOMSON

• Discovered that there are particles that make up atoms
• Thought that the particles were like plums in pudding

ERNEST RUTHERFORD

• Discovered that the atom has multiple types of particles in it
• There is a dense core with multiple particles around it

NIELS BOHR

• Discovered that there are particles that orbit around the core

MODERN ATOMIC THEORY

• Heisenberg and schrodinger discovered this theory
• They discovered that there are electron clouds that are the places where it is most likely to find electrons