1. Tuesday, October 28th, 2014
HW: Week 9 Agenda Problems; Week 9 Textbook Reading; Study Elements
Catalyst:
Using the data representation on the back of your catalyst chart answer the following: When 42 fans attended the football game, did the Broncos win? How do you know?
Standard: IOD 201: Select a single piece of data from a simple data presentation.
Objective: SWBAT convert between moles and number of molecules using Avogadro’s number.

2. Announcements Homework: Week 9 Agenda; Textbook Reading (due Thurs)
Tutoring this week: Weds./Thurs.
BRING A CALCULATOR EVERY DAY!!!
QUIZ FRIDAY
Don’t forget about ELEMENTS QUIZ

3. Announcements Homework: Week 9 Agenda; Textbook Reading (due Thurs)
Tutoring this week: Weds./Thurs.
BRING A CALCULATOR EVERY DAY!!!
QUIZ FRIDAY
Don’t forget about ELEMENTS QUIZ
Memorize elements 1-20 on periodic table

4. Table of Contents Page Title Date Week 9 Catalyst Chart 10/27
Week 9 Agenda /27
Notes: Intro to the T-Chart /27
Week 9 Textbook Reading /27
Notes and Practice: Mole and Mole 10/28
to Atom Conversion

5. Table of Contents Page Title Date Week 9 Catalyst Chart 10/27
Week 9 Agenda /27
Notes: Intro to the T-Chart /27
Week 9 Textbook Reading /27
Notes and Practice: Mole and Mole 10/28
to Atom Conversion

6. Days Until the End of Quarter 17

7. Agenda Catalyst Homework Review
Notes: Mole to Atom/Molecule Conversion
Practice
Mini Quiz

8. Notes:The Mole and Mole to Atom Conversion
Pg.54

9. The Mole
It is important for scientists to know how many atoms or molecules are entering a chemical reaction.
Atoms and molecules are really tiny, so how can we count them?

10. The Mole
Sometimes we group items into manageable units for counting purposes:
Example:
Count eggs with a dozen = 12 eggs
Count sheets of paper with a ream = 500 sheets
Count age with a year = days
These units are too small for atoms! A ream of atoms would be too small for the human eye!

11. The Mole
Chemists use a different unit for counting atoms: THE MOLE.

12. The Mole
Not these types of moles!

13. The Mole Just as 1 dozen = 12 items, 1 mole = 6.022 * 1023 items.
In standard notation we write this as: 602,200,000,000,000,000,000,000
That’s a huge number!

14. The Mole Let’s put this in perspective…
If you went to the store and bought a dozen donuts, you would need a box just large enough to hold 12 donuts.
>

15. The Mole
If you went to the store and bought a mole of donuts, you would need a box 1/2 the size of the earth!
------> 0.5 x
!!!

16. The Mole

17. The Mole

18. The Mole

19. The Mole

20. The Mole

21. The Mole

22. The Mole

23. The Mole
Using the value of a mole we can create TWO values for T-Charts when converting:
When going from Moles to Molecules/Atoms
When going from Molecule/Atoms to Moles
Given Unit (Moles)
6.02 x 1023 atoms/molecules
1 mole
Given Unit (Molecules/Atoms)
1 mole
6.02 x 1023 molecules/atoms

24. The Mole
A mole of them -- or x 1023 molecules!

25. Example or Whiteboard Practice
When looking at the problem FIRST do the following:
Underline the given value
Circle the desired value
Set up your T-Chart just like yesterday
Desired unit on TOP of conversion factor
Given unit at the BOTTOM of conversion factor
Cancel out units
Circle your final answer and include YOUR UNITS!!!!

26. The Mole: Atom to Mole
How many atoms are in 4.5 moles of magnesium ribbon?
Ans: 2.7 x 1024 atoms
4.5 moles
6.02 x 1023 atoms
1 mole

27. The Mole: Mole to Molecule
How many moles of H2O are in
7.3 x 1025 molecules of water?
Ans: 120 moles
7.3 x 1025 molecules
1 mole
6.02 x 1023 molecules

28. The Mole: Mole to Atom How many moles of sodium (Na) are in
5.36 x 1021 atoms of sodium?
Ans: moles or 8.90 x 10-3 moles
5.36 x 1021 atoms
1 mole
6.02 x 1023 atoms

29. The Mole: Molecule to Mole
How many atoms of Aluminum are in
6.5 x 10-5 moles of water?
Ans: 3.9 x 1019 atoms
6.5 x 10-5 moles
6.02 x 1023 atoms
1 mole

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

31. Exit Ticket/Mini Quiz #1
Today’s Objective: SWBAT convert between moles and number of molecules using Avogadro’s number.
I have no idea Need tutoring Almost there/ I got it!!!
and need tutoring forgot a step
Answer the following questions (show all work):
1.) How many moles are in x 1023 molecules of water?
2.) How many atoms of zinc are found in 8.5 moles of zinc?