Catalyst 1/23/2012

1. Catalyst 1/23/2012 • Grab you binder and immediately take a seat • Get out your personal folder if you have it. • Put your C17 on your desk (if you did not turn it in on Friday)! • Lesson 16 should also be on your desk. • Get out a separate sheet of paper for work today! • Today’s Objective: Review Unit 2 & 3 for the final Exam.

2. Catalyst 1/23/2012 • Is NaC2H3O an ionic, covalent, or metallic compound? In 1-2 sentences justify your answer.

3. Catalyst 1/23/2012 Draw the Lewis Structure for CH2Cl2 . Show your work!

4. Catalyst 1/23/2012 • Is Mg2+ an anion or a cation? Why?

5. Catalyst 1/23/2012 • Draw the crystal lattice for the salt LiF. Label the anions and the cations.

6. Catalyst 1/23/2012 • What holds atoms together in an ionic bond? • shared pairs of electrons between the atoms • exchanged electrons result in two positively charged ions form a bond • the sea of electrons acts like a glue to keep the nuclei together • electrostatic attraction between anions and cations

7. Answers to Catalyst • 1. • 2. • 3. • 4. • 5.

8. Announcements • Your Final Test is tomorrow! • 72 multiple-choice • You need to be here! • A Unit One Packet to complete • Study tonight! • Take home your notes/practice questions • Correct your Unit 2 & 3 Tests • Make a study card

18. Jeopardy • Expectations: • Only chemistry • Both partners are responsible for the answer • Inside voices • Your board must be up before the song ends! • Keep your own score in the top right corner Team # Score

19. Chemistry Jeopardy

20. What is the octet rule?

21. Ionic bonds are formed between _______ and _______; the electrons are _______.

22. Is H2SO4 an ionic, covalent, or metallic compound?

23. Is NaCHCO2 an ionic, covalent, or metallic compound?

24. Which of the following is an example of an • ionic compound? • AlCl3 • H2CCH2 • He • H2CO3 • Why?

25. What does organic mean in chemistry?

26. What type of compounds are large biological molecules like C6H12O6?

27. Draw out the Lewis symbol for carbon. How many bonds will it form in large biological molecules?

28. For the polymer ~CHC(O)OHCH3CHC(O)OHCH3CHC(O)OHCH3~ the repeating subunit is: (O)OHCH3 CH(O)OH CH(O)OHCH3 CHC(O)OHCH3

29. Nucleic acids are long chains made up of a repeating pattern of nucleotides. In this example, what is the polymer and what is the monomer?

30. What is a general term for an ionic compound?

31. What is a cation and how are they formed?

32. What holds ions together in ionic bonds?

33. Draw the crystal lattice for LiBr and label the cations and the anions.

34. Which of the following sets lists • the correct charges for each ion? • Na+, K-, O2- • Mg2-, N3+, O2+ • Al5+, K+, F- • P3-, Na+, Al3+

35. Draw the correct Lewis Symbol for fluorine (F).

36. Name three other elements that would have the same Lewis Symbol as krypton (Kr).

37. Draw the correct Lewis structure for fluorine gas (F2). Show all steps!

38. Draw the correct Lewis Structure for CCl4. Show all steps!

39. In relation to chemical bonding, • what do all of the following molecules • have in common? • NH2CH2COOH • Cl2 • CHCOOH • N2

40. Double Points! Draw the correct Lewis structure for SBr2. How many single bonds are there in this molecule? Show all steps!

41. Double Points! Draw the correct Lewis structure for chloroform (CHCl3). Show all steps!

42. Which is the correct Lewis Structure for carbon monoxide (CO)?

43. Which is the correct Lewis Structure for CH3N2?

44. Which is the correct Lewis Structure for ozone (O3)?

45. Study Card • One-half of a 3X5 study card

46. Closing • Unit #2 Exam tomorrow! • Take home your notes/practice questions • Make a study card (everyone has to do it!) • Correct your mistakes on the study guide • Come in during lunch if you have questions!

47. Advisory Launch • Take out your reading book. • Begin reading silently!