atomic theory

What subatomic particle was discovered by JJ Thomson?

• nucleus

• neutron

• proton

• electron

What part of the atom did Rutherford discover?

• nucleus

• neutron

• proton

• electron

Who was the 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

This particle balances the charges from the protons to make the atom neutral.

• Proton

• Electron

• Neutron

• Nucleus

Tags

NGSS.HS-PS1-7

Which particles are found in the nucleus?

• Protons and electrons

• Nucleus and neutrons

• Protons and neutrons

• Electrons and neutrons

Tags

NGSS.HS-PS1-8

Which of the following shows the correct order of the 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

• Electrons and alpha particles

• Gold foil and cathode rays

Who is the scientist responsible for discovering the nucleus?

• Bohr

• Rutherford

• Schroedinger

• Einstein

Tags

NGSS.HS-PS1-8