Atomic+Model

toc

=Virtual Lab: Models of the Hydrogen Atom= 3/8/12 By Chris Hallowell

PRE-LAB QUESTIONS: 1. Recall from Chemistry, first learning about atomic models. You may look this information up in a textbook or an online resource if you need to refresh your memory. Be sure to credit your sources appropriately.

i. List the 6 models of the atom as they evolved chronologically. Billiard Ball Model Plum Pudding Model Classical Solar System Model Bohr Model deBroglie Model Schrodinger Model

ii. List the scientists who are credited with their discovery. Billiard Ball Model- John Dalton Plum Pudding Model- J. J. Thomson Classical Solar System Model- Ernest Rutherford Bohr Model- Niels Bohr deBroglie Model- Louis deBroglie Schrodinger Model- Erwin Schrodinger

iii. Provide a brief description of each model, how it differs from the previous model, and any experiment done to derive the model. Billiard Ball Model- An element has atoms that are all the same size, mass, and other properties. Every element has different atoms. Plum Pudding Model- An atom is a positive blob with negative electrons floating around. Classical Solar System Model- All the positive particles were concentrated in a small nucleus in the center of the atom and the electrons are moving around the nucleus. Bohr Model- Electrons move in circular orbits around the positive nucleus. deBroglie Model- Because light can act like a particle, then an electron can act like a wave. Schrodinger Model- Electron is a wave and it does not describe an exact location of the electron but a general region.

PART 1:

PART 2:

FOLLOW-UP QUESTIONS: