Atomic Theory/Structure Homework Quiz

Who is known as the founder of atomic theory?

• Dalton

• Rutherford

• JJ Thomson

• Bohr

J.J. Thomson provided evidence that an atom...

• is the smallest particle of matter

• contains negatively charged particles (electrons)

• has an overall negative charge

• has an overall positive charge

Who came up with this model of an atom? (hint: this is also known as the planetary model)

• J.J. Thompson

• Ernest Rutherford

• Neils Bohr

• James Chadwick

True or False: The majority of an atom is made up of empty space

• True
• False

Tags

NGSS.MS-PS1-1

Rutherford's gold foil experiment provided evidence that...

• negative and positive charges are spread evenly throughout the atom.
• alpha particles have a positive charge.
• gold is not a dense as previously thought.
• there is a dense positively charged nucleus at the center of an atom.

What scientist is best known for his "Plum Pudding" model of the atom? (I also called this the "blueberry muffin model")

• J.J. Tomson

• Ernest Rutherford

• John Dalton

• Democritus

All matter is made of what?

• energy 
• atoms 
• electrons 
• compounds 

This contains most of the mass of an atom

• Electron Cloud
• Nucleus
• Electron

Tags

NGSS.HS-PS1-8

This is a negatively charged particle found outside the nucleus

• Electron
• Proton
• Neutron

This particle is found in the nucleus and has a positive charge

• Electron
• Proton
• Neutron