Dekalb Reads Assignment 3.1 B

Read pages 73-76 and answer the questions.

(3 points, if you use your own text book)

1. What did Democritus and Dalton think about the atom?
2. Which model compares electrons to planets?
3. How is the energy of each electron determined?
4. What do the electrons do to move to a higher energy level?
5. What does an electron do to move to a lower energy level?
6. What is believed in the modern model of the atom?
7. Why is it impossible to know the exact location of the moving blades of fan?
8. What is impossible to determine about the electron in an atom?
9. How do scientists show the likelihood of finding and electron in a given location?
10. What does darker shading represent?
11. What is the whole shaded region called?
12. Define orbital.
13. How many different kinds of orbitals are there?
14. Which orbital is the simplest of all?
15. How many orientations in space are possible for an S orbital and why?
16. What is the shape of ‘p’ orbital?
17. In how many different ways a ‘p’ orbital can be oriented?
18. Apart from s and p orbitals what ate the other two orbitals?
19. How many possible ‘d’ orbitals are there?
20. How many possible ‘f’ orbitals are there?
21. How many maximum electrons can an orbital hold?
22. Arrange the orbitals from lowest to highest energy?
23. Which orbitals do electrons occupy in an atom?
24. Define valence electron.