Atomic Theory

Which scientist saw the atom as a solid sphere?

• Dalton
• Thomson
• Rutherford
• Bohr

Discovered the electron

• J J thomson
• Dalton
• Chadwick
• Rutherford

Created a model of the atom with electrons moving around the nucleus in fixed orbits

• Bohr
• Dalton
• Heisenberg
• J J thomson

Discovered the neutron

• Chadwick
• Bohr
• J J thomson
• Dalton

Did the gold foil experiment

• Rutherford
• Dalton
• Democritus
• Heisenberg

Tags

NGSS.HS-PS1-8

Hypothesized that the atom was a tiny hard sphere

• Dalton

• Rutherford

• Chadwhich

• J J thomson

Used the cathode ray tube in his discovery

• J J thompson
• Dalton
• Chadwick
• Democritus

Created the “plum pudding” model of the atom

• J J Thompson
• Chadwick
• Dalton
• Democritus

Described the atom as solid and positive with negative particles scattered throughout randomly (like a plum pudding or chocolate chip cookie)

• Rutherford

• Thomson

• Planck

• Bohr

Proposed that matter is made up of fundamental particles called atoms. He called them atomos

• Democritus

• Aristotle

• Chadwick

• Dalton