Atomic Theory History

Who created the "plum pudding" model of the atom?

• JJ Thomson(1897)
• John Dalton(1800's)
• Ernest Rutherford(1917)
• Neils Bohr(1920)

Who discovered the proton?

• JJ Thomson(1897)
• James Chadwick(1932)
• Ernest Rutherford(1917)
• Dmitri Mendeleev(1876)

What is this model called?

• "Plum Pudding" Model
• Bohr's Model
• Orbital
• Chadwick Model

James Chadwick discovered...

• the proton
• the neutron
• the electron
• the atom

Tags

NGSS.HS-PS1-8

Neils Bohr discovered...

• that electrons orbit a nucleus
• that electrons gain or lose energy when they jump levels
• that electrons can only orbit stably
• All of the above

James Dalton discovered...

• atomic mass
• atomic number
• atoms
• the Periodic Table of Elements

What did Mendeleev do?

• Created the cupcake
• Created the fashionable beard
• Created the Periodic Table
• Created the Mendeleev Model

How did (insert dude here) organize the Periodic Table?

• He used atomic mass
• He used atomic number
• He used magic
• He guessed