Atomic Theory Honors

Which is the correct sequence of the scientists who made major changes in the model of the atom?
1-JJ Thomson
2-Erwin Schrodinger
3-John Dalton
4-Niels Bohr
5-Ernest Rutherford

• 2, 1, 4, 3, 5
• 3, 1, 5, 4, 2
• 5, 3, 2, 1, 4
• 4, 3, 2, 1, 5

What contribution did John Dalton make to atomic theory? 

• He discovered that every atom was positively charged. 
• He discovered that every element consisted of one type of atom.  
• He discovered that atoms had nuclei. 
• He discovered that atoms could be divided into smaller parts. 

What scientist is best known for his "Plum Pudding" model of the atom?

• J.J. Tomson
• Ernest Rutherford
• John Dalton
• Democritus

Which scientist discovered the electron?

• Bohr
• Rutherford
• Dalton
• Thomson

Which scientist discovered the nucleus?

• Bohr
• Rutherford
• Chadwick
• Thomson

Who is the scientist who proposed the "solar system" model of an atom where the electrons orbit around the nucleus?

• Democritus
• Niels Bohr
• Ernest Rutherford
• Chadwick

Which scientist described electrons as waves that move in orbitals? 

• Thomson
• Rutherford
• Schrodinger
• Chadwick

This model described the  atom as having a postive center called the nuclues with an empty space where electrons could be found.

• The Bohr Model
• The Nuclear Model
• The Electron Cloud Model
• The Quantam Mechanic Model

Measure mainly of the nuclear particles: protons + neutrons

• Subatomic Particles
• Atomic Number
• Atomic Mass
• Gluons

Value representing the number of protons in an element

• Atomic Mass
• Mass Number
• Valence Electrons
• Atomic Number