Atomic theory

JJ Thomson discovered what subatomic particle

• nucleus

• neutron

• proton

• electron

Rutherford discovered what part of the atom

• nucleus

• neutron

• proton

• electron

First person to propose the concept of an atom

• Rutherford

• Democritus

• Dalton

• Bohr

Who proposed the theory that atoms orbit the nucleus in specific orbits.

• Bohr

• Democritus

• Rutherford

• Chadwick

Which of the following shows the correct order of Atomic Theory Timeline

• Rutherford, Bohr, Dalton, Democritus, Thomson

• Bohr, Democritus, Thomson, Rutherford, Dalton

• Dalton, Thomson, Rutherford, Bohr, Democritus

• Democritus, Dalton, Thomson, Rutherford, Bohr

Thomson Experimented with ______

• Gold Foil

• alpha particles

• cathode rays

• protons

Rutherford experimented with ____

• Gold foil and alpha particles

• Cathode rays and alpha particles

• electron and alpha particles

• gold foil and cathode rays

Which Scientist created this model

• Democritus

• Chadwick

• Bohr

• Rutherford

James Chadwick discovered the ________.

• proton
• neutron
• electron
• nucleus

He claimed that matter was made of small, hard particles that he called “atomos.”

• Democritis

• Dalton

• Moseley

• Einstein