STRUCTURE OF THE ATOM
RE-STUDY NAME__________________________________HR___
DIRECTIONS: Read the “Structure of the Atom” and answer the questions. This is a review unit and dives
directly into our next unit about the electromagnetic spectrum and electron configuration.
When writing essay questions, words such as “it” and “they” should not be used. Use specific words and write
in complete sentences. Number one is a good example of how to write an essay answer.
1. Summarize the opening paragraph.
Chemical reactions happen all of the time at very small levels. Humans have
discovered the basic parts of the atom as well as other small parts.
2. Describe the electron.
3. Who discovered the electron before J.J. Thomson?________________________________
4. Describe J.J. Thomson’s experiment.
5. Describe the proton.
6. Describe Ernest Rutherford’s experiment AND what did he discover?
7. Describe the neutron.
8. Describe the Chadwick experiment.
9. Name the particles listed with each fundamental particle.
Leptons: ___________________, ____________________, _____________________
Bosons:__________________, ___________________, ___________________,_____________________
Baryons:____________,___________,_________, __________, __________, _____________,___________
10. The atomic number was discovered by _____________________________
11. The atomic number is the number of _________________and is represented by the letter_______.
12. Can mercury be mercury with an atomic number of 81? YES NO Why?
13. Electromagnetic radiation is an oscillating wave that has both
_______________________and___________________________components.
14. Different substances __________________or_______________light based on their atomic or
molecular structure.
15. What is the photoelectric effect? Describe the process.
16. What do you suppose a photon is?
17. Neils Bohr changed the structure of the atom. Explain how he organized the atom.
18. Draw the Bohr model of Carbon, Nitrogen, and Oxygen from chart on page 76. What pattern do you
see?
19. Each atom has a ________________________state. The electrons are able to change energy levels if
they _______________________energy. If the atom lost energy, the electron would drop back to the
ground state and release a __________________________of energy.
20. How many electron can be found in the first energy
level?_______Second_____Third_____Fourth_____
21. Max Planck believed that light had properties of ____________________________, de Brolie proposed
that waves could behave like a _____________________________.
22. Just read the last paragraph….this section is a few days away.