History of the Atom

In Dalton's Atomic Theory, all elements consist of __________ that cannot be divided.

• Atoms
• Parts
• Molecules
• Hydrogen

In the Thomson Model, he discovered the existence of what particle?

• Electrons
• Protons
• Neutrons
• Quarks

Which model is this?

• Thomson Model
• Cloud Model
• Bohr Model
• Rutherford Model

What did James Chadwick discover?

• neutrons
• electrons
• the atomic theory
• protons

Which scientist saw the atom as a solid sphere?

• Dalton
• Thomson
• Rutherford
• Bohr

Proposed that electrons move around the nucleus in specific layers, or shells.

• Bohr

• Rutherford

• Chadwick

• Thomson

What Greek philosopher first spoke about the idea of an atom?

• Democritus
• Dalton
• Thompson
• Rutherford

Who performed the Gold Foil Experiment?

• J. J. Thomson
• Ernest Rutherford
• Neils Bohr
• John Dalton

What did Aristotle say the five main elements were?

• Earth, air, fire, water and aether

• Ice, Water, Steam, clouds And slush

• Dirt, rocks, sand, cement and soil

• Silicon, Gold, Silver, Carbon and hydrogen

Which of the following are particles in an atom? Select all that apply.

• proton

• electron

• nucleus

• neutron

• matter