Atomic History

Which model of the atom proposed that atoms were positive spheres with negative electrons in them?

• Heliocentric Model

• Solid Sphere Model

• Plum Pudding Model

• Planetary Model

Who was the Greek philosopher who called the smallest particle of matter "atomos"?

• Democritus

• Aristotle

• J.J Thompson

• Epididymis

Bohr modified the Rutherford model by stating that the electrons move in orbits of fixed size and energy.

• True
• False

Who proposed the solid sphere model for the atom?

• James Chadwick
• Rutherford
• John Dalton
• Bohr

Which scientist conducted experiments using alpha particles and thin gold foil, which later helped him develop his model for the atom? 

• Ernest Rutherford
• James Chadwick
• Niels Bohr
• John Dalton

Which scientist discovered the electron with the Cathode Ray Tube, which helped him develop a model of the atom?

• Niels Bohr

• John Dalton

• Ernst Rutherford

• J.J Thompson

Who is the scientist who proposed the planetary model of an atom where the electrons revolve around the nucleus?

• Dalton

• Niels Bohr

• Ernest Rutherford

• Democritus

What did James Chadwick discover?

• neutrons
• electrons
• the atomic theory
• protons

Tags

NGSS.HS-PS1-8

Who discovered the proton in the nucleus?

• Dalton
• Chadwick
• Rutherford
• Thompson

Which experiment did Thompson do?

• Gold Foil
• Cathode Ray
• Discovered TNT
• First dissection