1. Monday, November 17th, 2014
HW= Agenda #1-3, C1-2 Objective: We will be able to calculate the average atomic mass of an element based on isotope abundance. Standard: IOD 401 Catalyst: Please answer question #1 on the back of your catalyst sheet.
Classroom expectations:
Wear Kenwood ID.
Cell phones, music players, and headphones are put away.
Food is disposed of or put away.
Dressed appropriately.
Notebook is out and you are ready for today’s class.
Table of Contents:
12 Week 12 Catalyst Chart
12 Week 12 Agenda
12 Notes: Isotopes

2. Announcements Test NEXT MONDAY!!!
Tutoring Tuesday and Wednesday THIS WEEK!!

3. Agenda
Catalyst
Announcements
Homework Review
Isotopes Notes
Exit Slip

4. Week 11 Homework 1. 1.06 x 1024 atoms of Magnesium
moles of Gold
g of Sodium
4. a b c d. 32
5. Protons
6. a. 80 P, 121 N, 80 E b. 74 P, 110 N, 74 E
7. Valance electrons tell us the number of electrons in the outmost shell.
8. a. 7 b. 9 c d. 7

5. Isotopes Recall
Atoms with the same number of protons, but different numbers of neutrons.
Atoms of the same element (same atomic number) with different mass numbers
Isotopes of Chlorine
35 Cl 37 Cl
Chlorine Chlorine - 37

6. Isotopes Recall
Despite these differences, isotopes are chemically alike because they have identical numbers of protons and electrons.
Neon-20, neon-21, and neon-22 are three isotopes of neon, a gaseous element used in lighted signs. Comparing and Contrasting How are these isotopes different? How are they similar?

7. Isotopes Recall Isotope Protons Electrons Neutrons Nucleus Hydrogen–1
(protium) 1
Hydrogen-2
(deuterium)
Hydrogen-3
(tritium) 2

8. Review: Check for Understanding
Fluorine has an atomic number of 9. Write out the name of the isotope of fluorine that has 8 neutrons.
Fluorine-17

9. Review: Check for Understanding
Fluorine has an atomic number of 9. Write out the SYMBOL of the isotope of fluorine that has 10 neutrons.
Mass #  19 F
Atomic #  9

10. Review: Check for Understanding
Three isotopes of chromium are chromium-50, chromium-52, and chromium-53. How many neutrons are in each isotope, given that chromium has an atomic number of 24?
Chromium-50:
50-24 = 26 neutrons
Chromium-52:
52-24 = 28 neutrons
Chromium-53:
53-24 = 29 neutrons

11. Average Atomic Mass What is average atomic mass?
Average atomic mass is the weighted average of the atomic masses of the naturally occurring isotopes of an element
The average mass on the periodic table is closest to the ISOTOPE of GREATEST abundance

12. Check for Understanding
The average atomic mass of Carbon, C, is amu. Predict which isotope has the greatest percent abundance based upon the average atomic mass.
Carbon – 10
Carbon – 12
Carbon – 13
Carbon -- 14

13. Whiteboard Practice Show all of your work when completing the problem.
DO NOT hold up your board until told to do so.

14. Tuesday, November 18th, 2014 HW= 4-6, C3
Objective: We will be able to explain why atoms form ions and draw Bohr models to illustrate this process.
Standard: IOD 201
Catalyst Answer Choices:
F. medium
G. low to medium
H. medium to high
J. high
Classroom expectations:
Wear Kenwood ID.
Cell phones, music players, and headphones are put away.
Food is disposed of or put away.
Dressed appropriately.
Notebook is out and you are ready for today’s class.
Table of Contents:
POGIL: Ions

15. Announcements
Test NEXT MONDAY!!!
Tutoring today and Wednesday!!

16. Agenda Catalyst Announcements Homework Review Isotopes Review
Ion POGIL
Exit Slip

17. Problem #1 Write the isotope SYMBOL for the following: Neon -22 Ne
Magnesium-26 Mg 22 10 26 12

18. Problem #2
Helium has two naturally occurring isotopes, He-3 and He-4. The atomic mass of helium is amu. Which isotope is more abundant in nature? Explain.
He-4 is more abundant in nature because the atomic mass is closer to the mass of He-4 than to the mass of He-3.

19. Problem #3
Determine the protons, neutrons, and electrons in the isotopes of silicon: Silicon-28 P = 14 E = 14 N= 14 Silicon-29 P = 14 E = 14 N = 15 Silicon-30 P = 14 E= 14 N = 16

20. POGIL Remember your roles! Captain-leader!
Spokesperson-asks questions!
Manager-supplies and reads!
Quality Control-checks answers!

21. Period 2 Group 1: Kamyl Mariah Ronald Janea DESKS!! Group 2: Jeremy
Breona
Ladjion
Lilronald
Group 3:
Marquell
Jazmine
Kai
Group 4:
Zlandria
Yah
Ike
Rajah
Group 5:
Jakobi
Quinetta
Lorenzo
Group 6:
Cemarah
Coumba
Dajionae
Group 7:
Brianna
Christian
Alyssa
Group 8:
Manny
Rashad
Naimah

22. Period 7 Group 1: Gabe Caira Cheyenne Group 2: Malcolm Jacob Kendra
DESKS!!
Group 3:
Kyle
Derek
Kevin
Group 4:
Joseph
Kensington
Malik
Monee
Group 5:
Jared
Juwan
Amiyah
Tionna
Group 6:
Martez
Marieal
Bonito
Group 7:
Alexandria
Tyrone
Group 8:
Samiyah
Tril
Xavier

23. Period 8 Group 1: Calvin Amber Siniah DESKS!! Group 2: Dwight Imani
Shanelle
Group 3:
Tiffany
Cairo
Jasmine
Group 4:
Keyshawn
Jade
Dre
Group 5:
Armani
Nykira
Koby
Group 6:
Arryl
Unique
Group 7:
Tia
Curtis
Alisia
Group 8:
Rayshon
Remi

24. Exit Ticket Based on what you did today, what are :
3 things you learned about ions?
2 questions you have about ions?
1 thing you wonder about ions?

25. X X X Door Front Table Door Mariah Alyssa Jakobi Kamyl Yah Ladjion
Jazmine
Quell
Ronald
Coumba
Rashad
Breona
Janea
Zlandria
Naimah
Quinetta
Manny
Brianna
LilRonald
Emmanuel
Rajah
Jazmine
Ike
Dajionae
Cemarah
CB Chem Period 2
Lorenzo
Quinetta
Christian X X X

26. X X X X Door Front Table Door Jacob Kendra Monee Malcolm Caira Jared
Tyrone
Kensington
Xavier
Tionna
Juwan
Tionna
Bonito
Cheyenne
Marieal
Amiyah
Malik
Alexandria
Kevin
Joseph X
Kyle
Derek
Samiyah
CB Chem Period 7
Tril
Martez X X X

27. X X X Door Front Table Door Rayshon Tia Jade Dwight Calvin Jasmine
Alisia
Remi
Siniah
Amber
Arryl
Unique
Shanelle
Nykira
Koby
Dre
Cairo
Tiffany
Imani
Armani
Curtis
Keyshawn
CB Chem Period 8 X X X

28. Wednesday, November 19th, 2014 HW= 20-22, C4
Objective: We will be able to explain why atoms form ions and draw Bohr models to illustrate this process.
Standard:
Catalyst Answer Choices:
A. Pressure
B. Temperature
C. Metamorphic Grade
D. Depth
Classroom expectations:
Wear Kenwood ID.
Cell phones, music players, and headphones are put away.
Food is disposed of or put away.
Dressed appropriately.
Notebook is out and you are ready for today’s class.
Table of Contents:
12 Classwork: Ions

29. Announcements
Test on Monday!
Tutoring today until 4pm!

30. Agenda
Review POGIL
Notes: Ions
Practice: Ions

31. HW Review

32. POGIL Review

33. Classwork
Take out your worksheet for today’s lecture. Answer this question at the top:
In your own words what is an ion and how is it different from a neutral atom?

34. Ions An ion is an atom with a positive or negative charge.
Occur when there is an unequal number of protons and electrons.

35. Ions
Ions are created by the loss or gain or electrons.

36. Discuss
Lithium atoms like to form lithium ions with a +1 charge. Why can’t you add 1 proton to a lithium atom to form the lithium ion?

37. **Key Point Why do neutral atoms form ions?
An atom is most stable when it has a full outer shell with valence electrons. Atoms will gain or lose electrons until they are stable and have a full outer shell.

38. Thursday, November 20th, 2014 HW= 7-12, C5
Objective: We will be able to explain why atoms form ions and draw Bohr models to illustrate this process.
Standard: IOD 503
Catalyst Answer Choices:
Question #5!!
A. Facies A
B. Facies F
C. Facies E
D. Facies G
Classroom expectations:
Wear Kenwood ID.
Cell phones, music players, and headphones are put away.
Food is disposed of or put away.
Dressed appropriately.
Notebook is out and you are ready for today’s class.
Table of Contents:
12 Classwork: Ions

39. Announcements
Test on Monday!
Tutoring today until 4pm!

40. Agenda
Catalyst
Announcements
Ions Review and Practice
Test Review!

41. Notes
Why do neutral atoms form ions?

42. Read This
Gaining or losing electrons requires an energy exchange. Atoms will form an ion based on the least amount of energy to fill an outer shell.
What are fluorine’s options for having a full outer shell?
Which do you think would take the least energy?

43. Read This
It takes less energy for lithium to lose one electron compared to the energy required to gain 7 electrons.

44. Sodium Ion
If the sodium ion loses one electron, what charge will the sodium ion have? Why?

45. Chlorine Ion
If the chlorine ion gains one electron, what charge will the sodium ion have? Why?

46. Practice
An atom that gains 2 electrons will have a _____ charge because _________________.
An atom that loses 2 electrons will have a _____ charge because _________________. -2
You add 2 negative charges +2
You remove 2 negative charges

47. Ion Practice
Please finish the practice on your handout.

48. Whiteboard Review Practice

49. Whiteboard Review Practice
Draw the Bohr model of Magnesium.

50. Whiteboard Practice
Identify what element this Bohr model represents.

51. Whiteboard Practice
What does the atomic number tell us?

52. Whiteboard Practice
What is the charge on an ion that gains three electrons?

53. Whiteboard Practice
Which has more neutrons: Bromine or Selenium?

54. Whiteboard Practice
How many moles are in 9.2 x 1013 molecules of water?

55. Whiteboard Practice
Write Uranium-239 in isotope form.

56. Whiteboard Practice
How many moles are in 726 grams of Mercury?

57. Whiteboard Practice
Give an example of an element, a compound, and a mixture.

58. Whiteboard Practice What is an isotope?
What subatomic particle is different in isotopes?

59. Whiteboard Practice
How many atoms are in 23.7 g of Cobalt?

60. Whiteboard Practice
How many grams are in 2.11 x 1042 atoms of Xenon?

61. Whiteboard Practice
What is the difference between a homogenous and heterogenous mixture?

62. Whiteboard Practice
Ions have different numbers of __________ compared to neutral atoms.

63. Whiteboard Practice
What does Calcium need to be most stable? (Think electrons!)
What will its ionic charge be?

64. Exit Ticket What are: 3-things you feel confident about on the test?
2-things you feel you need more practice on?
1-thing you need before the test to be successful?