Atomic Theory Scientists

What was Ernest Rutherford's contributions to atomic theory?

• Discovered the nucleus- did the gold foil experiment

• Used the cathode ray tube in his discovery

• Discovered the electron

• Discovered the neutron

Tags

NGSS.HS-PS1-8

What are two facts about Democritus's?

• Greek philosopher

• Created the atomic theory

• Used the cathode ray tube in his discovery

• Believed that the universe was made of tiny "uncuttable" particles

• Discovered that the atom is mostly empty space

What were Ernest Rutherford's three contributions to atomic theory?

• Discovered that the atom is mostly empty space

• Discovered the nucleus- did the gold foil experiment

• Used the cathode ray tube in his discovery

• Discovered the electron

• Discovered that the proton had a positive charge

In the atomic model nicknamed the "plum pudding" model, what do the plums represent?

• the nucleus

• the atom

• the electrons

• the positive material

All matter is made of atoms

• Rutherford

• Bohr

• Democritus

• Dalton

Tags

NGSS.HS-PS1-7

Which scientist saw the atom as a solid sphere?

• Dalton
• Thomson
• Rutherford
• Bohr

conducted gold foil experiment

• Schrodinger

• Dalton

• Heisenberg

• Rutherford

Which scientist proposed the "plum pudding model" of the atom?

• J. J. Thomson

• Joseph Proust

• Ernest Rutherford

• Antoine Lavoisier

• John Dalton

Positively charged atoms with electrons. "Plum pudding"

• Democritus

• Bohr

• Thomson

• Dalton

Who is the scientist who proposed the "solar system" model of an atom where the electrons orbit around the nucleus?

• Democritus
• Niels Bohr
• Ernest Rutherford
• Chadwick