Quiz for June 21. Atomic histor

Who was the first person to "think" of an atom?

• Democritus

• J.J. Thompson

• Rutherford

• Bohr

What experiment was used to discover the nucleus?

• Cathode Ray Tube

• Gold Foil

• Chromatography

• Gel Electrophorese

Which one of these is Dalton's Model?

• 
• 
• 
• 

Who discovered the nucleus?

• Rutherford

• Bohr

• J.J. Thompson

• Democritus

What experiment was used to discover electrons?

• Cathode Ray Tube

• Gold Foil

• Chromatography

• Gel Electrophorese

What model is the current model of the atom?

• Rutherford's

• Bohr's

• The Quantum Mechanical Model

• Dalton's

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

The central region of an atom where neutrons and protons are located is the __________________.

• nucleus 
• electron cloud
• core 
• center 

Worked with Rutherford to discover particles with no charge -- called neutrons.

• James Chadwick

• Niels Bohr

• Democritus

• Thomson

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

• Bohr

• Rutherford

• Chadwick

• Thomson