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Complete the following questions related to the Brief History of Atomic Structure using your class notes.
1) ________________ was the person given credit for the "Solid Sphere Model" of the Atom.
2) Thomson exposed a piece of metal to high energy in a vacuum.
- a)He observed what ? ________________________________
- b) From these observation, he said what about an atom?_____________________
- c) What is the name they give his atomic theory _______________
- d) Draw a picture of what the atom looks like and explain the piece?
3) a) _________________ determined the Structure of the Atom and what part of the atom did he name ____________.
- b) In the space below, briefly explain the experiment that the person from Question 3a did.
- c) From the observations of this experiment, draw what he concluded that the atom looked like (called the Nuclear Model of Atom). Please include a description of the parts/pieces of your drawing.
4) a) Bohr was the next major atomic theory contributor. He help explain what subatomic particle? _______________
- b) He stated these subatomic particles could only be in (reside) at specific discrete distance away from the nucleus (which also determine how much energy that subatomic particle can have). What did he/we call these discrete distances ? _________________
- c) How do these subatomic particles move in these discrete distances? _________________
- d) What is the name his atomic theory? _________________
- e) Draw a picture of his atomic model and explain the parts:
- f) What part of his atomic model was INCORRECT (rest of theory is correct)? _________________
5) How Atom and Energy interact
- a) Define the Ground state of Atom and draw a picture of one
- b) What does the atom do to have an electron be promoted (jump up) from a Lower Available energy to a Higher energy level? ____________
- c) Once in the higher energy level, the atom is in ______________ and give the definition, ________________________ and use a different color pen/pencil to show on picture from Question 5a.
- d) Instantaneously, the electrons falls back down to the original Lower Available Energy level and what happens to the energy of the atom? ___________________
. What is the special name we give it? ________________. Again add this to your picture
- e) Now the atom is back in the _____________state.
- f) What happens if the atom does not "see" (is not exposed to the correct discrete energy packet size it needs to promote one of its electrons) ____________