Unit 3 The Atom & Light

1. Unit 3The Atom & Light

2. Today… • Turn in: • Complete Unit 1 Goal Sheet • Write 2 things you would do differently if you did not meet your goal • When you turn in your Goal Sheet pick up a calendar & notebooklet • Our Plan: • New Calendar • Symbols Video • Review – BINGO • Symbols Quiz #1 • Build an Atom Online – due today • Begin Stop the Process Ch. 4 in your booklet • Wrap Up – Inside-Outside Circle • Homework (Write in Planner): • Build an Atom Online due

3. Element Song http://www.youtube.com/watch?v=GFIvXVMbII0

4. Why can’t you remember the symbols if they can?

5. Why can’t you remember the symbols if they can?

6. Why can’t you remember the symbols if they can?

7. Review • BINGO • Fill out a bingo card with the symbols of any of the elements that you were to memorize (use the handout you were given last class if you aren’t sure). • The instructor will call out an element; mark off the symbol if you have it. The first student to get a BINGO wins! Play will continue until there are 3 winners. • The prize – you can ask for 2 FREE ANSWERS on the quiz if you are one of the 3 winners!

8. Ready for the Symbols Quiz? Magnesium Aluminum Zinc Gold Phosphorus Carbon Francium Calcium Boron Lithium Iron Mg • Fe • Ag • H • He • O • Ar • K • Xe • I • U Silver Al Hydrogen Zn Au Helium Oxygen P C Argon Fr Potassium Ca Xenon Iodine B Li Uranium

9. Wrap Up • Inside-Outside Circle • Each student will get 1 or 2 element flashcards. • Find a partner. Form a circle in the classroom with one partner on the inside and one on the outside. Face each other. • Quiz your partner and they will quiz you. The instructor will tell you when and how to rotate (inside move 2 people left, outside move 1 person right, etc.)

10. Today… • Turn in: • Build Your Own Atom Online - basket • Our Plan: • Review – Quiz, Quiz, Trade • Symbols Quiz #2 • Atoms Family Song • Finish Stop the Process – due today • Timeline Activity • Wrap Up – Group Draw • Homework (Write in Planner): • Timeline Activity due MONDAY

11. Review • Quiz, Quiz, Trade • Every student will get 2 or 3 element flashcards. Move around the classroom finding partners. Quiz them, they will quiz you, and then trade cards. Continue finding new partners and learning the symbols.

12. The Atoms Family Song!

13. Activity Time • Complete the History of the Atom Timeline individually. • DUE MONDAY!

14. Wrap Up - Group Draw • Number off 1 – 4 in your group and obtain a whiteboard or piece of construction paper. • As a group you are to draw a Sulfur atom with the correct number of protons, neutrons, and electrons in the correct location. • Person 1 – Energy Levels • Person 2 – Protons • Person 3 – Neutrons • Person 4 – Electrons

15. Today… • Turn in: • Timeline Activity • Our Plan: • Review – Find Someone Who • Isotopes POGIL • Wrap Up – Word Wall Password • Homework (Write in Planner): • Nothing – Can finish POGIL next class

16. Find Someone Who • Move around the classroom and find students who can answer the questions on p. 7 of your notebooklet. Be sure to get their signature or initials.

17. POGIL Jobs • Leader – In charge of the group, reads the questions, summarizes what should be written • Task Master – Makes sure the group is on task and keeps track of time • Quality Control – Makes sure that everyone has close to the same answers recorded • Motivator – encourages the group and makes sure that everyone is participating and that all ideas are heard

18. Wrap Up • $100,000 Pyramid Game

19. Right Isosceles Scalene Obtuse • Nucleus • Protons Atomic Number Compound Chemical Symbol • Ion $300 $200 $50 $100 $250 $150 Acute Equilateral • Wrap Up Time

20. Right Isosceles Scalene Obtuse • Neutron • Mass • Number Electron Cloud Positive • Quarks • Element $300 $200 $50 $100 $250 $150 Acute Equilateral • Wrap Up Time

21. Today… • Turn in: • Nothing • Our Plan: • Review - Clicker Review • Finish POGIL • Hog Hilton • Notes – orbitals & electron configurations • Worksheet #1 • Wrap Up - Battleship • Homework (Write in Planner): • Worksheet #1

22. Review Activity • Atom Clicker Review

23. Bohr • He said that electrons travel around the atom in defined orbits or energy levels • The energy levels are like rungs of a ladder

24. Bohr’s Model

25. Schrödinger • He developed the modern theory of the atom • Came up with mathematical equations to predict the locations of electrons • Quantum mechanical model – based on probability

26. Analogy – p.130 • Similar to the motion of a rotating propeller blade. • Cannot tell its precise location at any instant • The cloud is more dense where the probability of finding an electron is high

27. Atomic Orbitals • Electrons are found in energy sublevels (atomic orbitals) • The sublevel corresponds to an orbital of a different shape

28. Atomic Orbitals • Orbitals are located inside energy levels just like subdivisions are located inside cities.

29. Orbitals • Region of space in which there is a high probability of finding an electron

30. Sublevels

31. Label Your PT

33. Orbitals • Only 2 electrons can fit in each orbital. • That means that any s orbital can only hold 2 electrons, and any d orbital can only hold 2 electrons • Since there are 5 d orbitals, it can hold 10 electrons total

34. Electrons

35. Label Your PT

36. Quantum Number • Indicates the probable location of an electron in an atom • LIKE AN ADDRESS!

37. Principle Quantum Number • Symbol = n • Indicates – energy level • Possible Values – 1-7 (K-Q) • STATE

38. Angular/Orbital Quantum # • Symbol = l • Indicates – sublevel • Possible Values – s, p, d, f • CITY

39. Magnetic Quantum Number • Symbol = ml • Indicates – orbital orientation • Possible Values – x, y, or z • STREET

40. Spin Quantum Number • Symbol = ms • Indicates – 2 possible spin states • Possible Values – +1/2 (CW) or -1/2 (CCW) • HOUSE NUMBER

41. EXAMPLE • n= 4 • l = p • ml = z • ms = -1/2 • 4th energy level • p orbital • z axis • Counterclockwise spin

42. Break Time! • Do the front of WS#1.

43. Challenge • This is the electron configuration for potassium. What do you think each number and letter means? 1s22s22p63s23p64s1

44. The Blocks of the PT

45. The Blocks of the PT • Whichever block an element is in corresponds to the orbital that it’s valence electrons are located. • Valence electrons are the outermost electrons in an atom

47. Electron Configuration • Shows how many electrons an atom has in each of its sublevels.

48. Remember • s holds 2 electrons • p holds 6 electrons • d holds 10 electrons • f holds 14 electrons

49. Aufbau Principle • An electron occupies the lowest energy level that is available • Additional electrons keep “building up” to new levels