Models of the Atom

In the early 1800's, John Dalton creates a model of the atom that is known as the ...

• Billiard Ball Model
• Plum Pudding Model
• Nuclear Model
• Planetary Model

This model was the first to show a nucleus.   Electrons randomly surround the nucleus

• Modern Model
• Plum Pudding Model
• Planetary Model
• Nuclear Model

This model was developed after J.J. Thompson discovered the electronIs in his Cathode Ray Tube experiment.

• Nuclear Model
• Plum Pudding Model
• Billiard Ball Model
• Modern Model

This model placed electrons into "orbits" that rotate around the nucleus similar to planets rotating around the sun

• Modern Model
• Nuclear Model
• Planetary Model
• Plum Pudding Model

This is the most current model of the atom that includes electron clouds

• Nuclear Model
• Modern Model
• Planetary Model
• Billiard Ball Model

What sub-atomic particle is this?
- Outside the Nucleus
- Negatively Charged

• proton
• electron
• neutron

What sub-atomic particle is this?
- Found the Nucleus
- No Charge

• proton
• electron
• neutron

He proposed the particle theory of matter and called nature’s most basic particle the “atomos”

• Aristotle
• Democritus
• Chadwick
• Millikan

He unknowingly discovered the electron as a result of cathode ray tube experiments.    

• Thomson
• Chadwick
• Democritus
• Aristotle

He believed that all matter was continuous and that four basic elements existed (earth, wind, fire, water).

• Democritus
• Aristotle
• Chadwick
• Thomson