Atomic Models Quiz

Which scientist proposed a new model of the atom after the discovery of the electron in 1897? His model consisted of electrons embedded in a sea of positive charge like seeds in a watermelon.

• J.J. Thomson

• Ernest Rutherford

• Niels Bohr

• Hantaro Nagaoka

• James Chadwick

Ernest Rutherford proposed which model of the atom?

• The Plum Pudding Model

• The Planetary Model

• The Quantum Model

• The Bohr Model

This model was developed after J.J. Thompson discovered electrons, a particle smaller than an atom. Is shows electrons floating freely in a positive space.

• The "Plum Pudding Model" of the atom
• The "Rutherford Model" of the atom
• Democritus's model of the atom
• The "Solar System Model" of the atom

This model added on to previous models by showing electrons existed at certain "energy levels;" however, it does not accurately show what those levels look like.

• The "Bohr Model" of the atom

• The "Rutherford Model" of the atom

• The "Plumb Pudding Model" of the atom

• The "Dalton Model" of the atom

• The "Chadwick Model" of the atom

Proposed that the atom had a dense, positively-charged center which was extremely small but consisted of mostly empty space.

• Ernest Rutherford

• J.J Thomson

• Hantaro Nagaoka

• John Dalton

• Bohr

According to the modern theory, the majority of an atom's mass exists where?

• In the nucleus

• In the electron cloud

• In the space between the nucleus and the electrons

• In the neutrons

According to the modern theory, what does the nucleus of an atom contain?

• Electrons and neutrons

• Protons and neutrons

• Neutrinos and positrons

• DNA and RNA

According to the modern theory, how are the electrons in an atom arranged?

• In groups of five

• In energy levels

• By color

• By shape

This scientist suggested that electrons "jump" between orbitals, thus giving off energy (light).

• Bohr

• Rutherford

• Nagaoka

• JJ Thomson

• Chadwick

This scientist was the first to suggest a planetary model for the atom, where the electrons orbit the nucleus.

• Bohr

• Nagaoka

• Rutherford

• JJ Thomson

• Chadwick