1. Thursday, October 30th, 2014 HW= Week 9 Agenda Problems
Objective: : We will convert between atoms and grams using Avogadro’s Number and molar mass.
Catalyst: The students not only counted how many fans attended, but also counted the number of fans from the opposing team as a comparison. Is the number of opposing team’s fans an independent or dependent variable in this study?
Standard: IOD 202: Identify basic features of a table, graph, or diagram.
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.

2. Announcements Homework: Week 9 Agenda; Textbook Reading (due Thurs)
Tutoring this week: Today
BRING A CALCULATOR EVERY DAY!!!
SKILLS and CONVERSIONS QUIZ TOMORROW
Notebook Check tomorrow!! Have EVERYTHING stapled in the correct spot.
Don’t forget about ELEMENTS QUIZ on Monday

3. Days Until the End of Quarter 15

4. Table of Contents Page Title Date Week 9 Textbook Reading 10/27
Notes: Mole and Mole to Atom 10/28
Conversion
Classwork: Mole to Mass Conversion /29
Practice: Grams to Atoms Conversion /30

5. Agenda Catalyst Announcements Homework Review
Notes: atom to gram conversions

6. HW Review
5a x 1024 atoms 5b x 1023 atoms 5c x 109 atoms 5d. 2.7 x 1021 atoms
6a moles 6b moles 6c x 10-5 moles 6d. 1.6 x moles

7. HW Review
7a mole Pd or 3.7 x 10-4 mole Pd 7b. 150 g Fe 7c g Ta
8a g Cr 8b g Al 8c x 109 g Ne

8. Mole Island! Mass 1 mole = molar mass (in g) (g) MOLE Atoms
1 mole = 6.02 x 1023 atoms
Atoms

9. Practice
Complete the 1 step conversions A-D on your sheet. This is review from the last 2 days.

10. Answers
A. 8.4 x 1023 atoms of Cs B moles of Na C. 51 grams of S D mole CaO

11. Think. Pair. Share.
Why can’t we convert directly from mass to atoms or from atoms to mass?

12. Remember when?? Convert 3520 seconds to hours
Can you do this in one step?
How can we use our T chart to help answer this question?
3520 seconds
1 minute
1 hours
= hours
60 seconds
60 minutes

13. The Mole When going from atoms/molecules to grams
When going from grams to atoms/molecules
1 mole
Molar Mass (grams)  PT
Given Unit (Atoms)
(6.02 x 1023 atoms)
1 mole
Given Unit (Grams)
1 mole
6.02 x 1023 atoms
Molar Mass (grams)  PT
1 mole

14. The Mole: Gram to Atom How many atoms are in 360 grams of bromine?
Ans: x 1024 = 2.7 x 1024 atoms
360 grams
1 mole
6.02 x 1023 atoms
79.90 grams
1 mole

15. The Mole: Atom to Gram
What is the mass of 5.6 x 1025 molecules of ammonia (NH3)?
Ans: = 1600 grams NH3
17.04 grams
5.6 x 1025 molecules
1 mole
1 mole
(6.02 x 1023 molecules)

16. Practice Worksheet
Complete the problems on your practice worksheet making sure to follow all instructions.

17. Exit Ticket/Mini Quiz #2
Today’s Objective: SWBAT convert between moles and grams using molar mass
I have no idea Need tutoring- Almost there I got it!!
and need tutoring
Answer the following questions (show all work):
1.) How many atoms are in 45 grams of water?
2.) How many grams of zinc are found in 3.25 x 1025 atoms of zinc?