Modern Atomic Theory 2.0

Match the following atomic models to their scientist

• John Dalton

• 
• Niels Bohr

• 
• Ernest Rutherford

• 
• J.J. Thomson

• 
• Werner Heisenberg

• 

Place the following scientists in chronological order (earliest to latest) in terms of modern atomic theory.

• J.J. Thomson

• Ernest Rutherford

• Werner Heisenberg

• Niels Bohr

• John Dalton

Match the following scientist to their atomic model:

• Plum Pudding

• 
• Bowling Ball

• 
• Cloud

• 
• Nuclear

• 
• Planetary

• 

What scientist performed the cathode-ray tube experiment? What was discovered as a result?

• Thomson, electron

• Rutherford, nucleus

• Bohr, photon

• Heisenberg, neutron

What scientist performed the gold foil experiment? What was discovered as a result?

• Thomson, electron

• Rutherford, nucleus

• Bohr, photon

• Heisenberg, neutron

The Heisenberg Uncertainty Principle tells us that --

• it is impossible to know if the atom is the smallest particle

• it is impossible to know if electrons exist

• it is impossible to know the exact location of an electron

• It is impossible to know how many energy levels an atom has

What was the major change in the atomic model from Thomson to Rutherford?

• electrons were now in clouds, areas where they were most likely to be located

• the atom was now mostly empty space with a small nucleus

• electrons were now located in specific energy levels

• atoms now had negative particles called electrons

What was the major change in the atomic model from Rutherford to Bohr?

• electrons were now in clouds, areas where they were most likely to be located

• the atom was now mostly empty space with a small nucleus

• electrons were now located in specific energy levels

• atoms now had negative particles called electrons

What was the major change in the atomic model from Bohr to Heisenberg?

• electrons were now in clouds, areas where they were most likely to be located

• the atom was now mostly empty space with a small nucleus

• electrons were now located in specific energy levels

• atoms now had negative particles called electrons

What was the major change in the atomic model from Dalton to Thomson?

• electrons were now in clouds, areas where they were most likely to be located

• the atom was now mostly empty space with a small nucleus

• electrons were now located in specific energy levels

• atoms now had negative particles called electrons