1. 7 – The Mole & Mole Conversions

2. Warm up: Agenda: Warm up Review molar mass hw Molar conversions notes
1. If you have a dozen mice, how many mice do you have? How about a dozen elephants?
2. Will a dozen mice and a dozen elephants have the same mass?
Watch THE MOLE IS A UNIT
3. If you have a mole of H atoms how many H atoms do you have? How about a mole of U atoms?
4.Will a mole of H and a mole of U have the same mass?
Agenda:
Warm up
Review molar mass hw
Molar conversions notes
Molar conversion ws
Homework:
Moles Lab Activty – sodium
OBJECTIVES
Students will understand and apply the mole concept to calculate formula weights and solve simple mole conversions.

3. 1. What is the mass of 3.2 x 1023 molecules of water?
Warm up:
1. What is the mass of 3.2 x 1023 molecules of water?
2. One liter of water has a mass of 1000g.
How many atoms are there in a liter of water?
Agenda:
Warm up
Molarity notes and practice worksheet
Homework:
Mixed mole practice worksheet
OBJECTIVES
Calculate molarity and use molar mass or Avogadro’s number to perform molar conversions.

4. WHICH IS MORE? One mole of marbles ? One mole of popcorn?
6.02 x 1023 softballs = volume of Earth
6.02 x 1023 Olympic shot puts = mass of Earth
6.02 x 1023 atoms H laid side by side would encircle Earth ~1,000,000 times
One mole of $100 bills ?

5. How Big is a Mole? One mole of marbles would cover the entire Earth
(oceans included) for a depth of three miles.
If you had Avogadro's number of un-popped popcorn kernels, and spread them across the United States of America, the country would be covered in popcorn to a depth of over 9 miles.
6.02 x 1023 softballs = volume of Earth
6.02 x 1023 Olympic shot puts = mass of Earth
6.02 x 1023 atoms H laid side by side would encircle Earth ~1,000,000 times
One mole of $100 bills stacked one on top of another
would reach from the Sun to Pluto and back 7.5 million
times.

6. Warm up:
Which is more? A mole of popcorn, a mole of marbles or a mole of dollar bills?
Agenda:
Review homework
Quiz
Enter answers on google forms
Read percent comp / formula notes
Percent composition examples as a class
Empirical and molecular formula examples as a class
Homework:
Formula WS and Empirical formula ws
OBJECTIVES
Use the percent composition of a substance to calculate its empirical and molecular formulas.

7. Warm up:
1. Find the percent composition of H and O in water.
2. What is the empirical formula of a compound containing 60.0% sulfur and 40.0% oxygen by mass?
3. What is the molecular formula for a compound with a molar mass of 320 g/mol and an empirical formula of S3O4
Agenda:
Warm up
Review homework
Review sheet
EVERY NUMBER GETS A UNIT
SHOW ALL OF YOUR WORK in an organized way.
Study for test next class.
OBJECTIVES
Use the mole concept to perform conversions. Calculate the percent composition, empirical formula, and molecular formula for different compounds.

8. Warm up:
Test today – clear your desk except for your periodic table, calculator and pencil.
Agenda:
Homework questions?
Pencil, calculator, periodic table
Test
Read and illustrate lab procedure
Answer prelab questions
OBJECTIVES
Display and understanding of the mole concept and formulas used in chemistry.

9. ÷ 6.02  1023 molar mass ÷ MOLES Molarity ÷ (particles/mol) (g/mol)IN
GRAMS
MOLES
NUMBER OF
PARTICLES
LITERS
SOLUTION ÷ x x ÷
Molarity
(mol/L) ÷ x
C. Johannesson

10. ÷ 6.02  1023 molar mass ÷ MOLES Molarity ÷ (particles/mol) (g/mol)IN
GRAMS
MOLES
NUMBER OF
PARTICLES
LITERS
SOLUTION ÷ x x ÷
Molarity
(mol/L) ÷ x
C. Johannesson

11. What is Avogadros number? What does it tell us?
Warm up:
What is molar mass?
What is Avogadros number? What does it tell us?
3. If you consume a 4.5g spoonful of sugar C12H22O11 (molar mass g/mol), how many molecules of sugar did you eat?
Agenda:
Warm up
Review homework – conversion
Conversion lab data collection and poster assembly
Summary – WHAT IS A MOLE?
Homework: Complete poster
OBJECTIVES
Students will count the number of molecules in a sip of water and message of chalk by weighing.

12. Warm up:
1. Find the percent composition of H and O in water.
2. What is the empirical formula of a compound containing 60.0% sulfur and 40.0% oxygen by mass?
3. What is the molecular formula for a compound with a molar mass of 320 g/mol and an empirical formula of S3O4
Agenda:
Warm up
Review homework – Empirical formula ws
Practice –
Packet 1 – Mixed mole quiz review #1-11
Packet 2 – formula calculations - #1-10
OBJECTIVES
Use the mole concept to perform conversions. Calculate the percent composition, empirical formula, and molecular formula for different compounds.

13. What are we doing in lab today? What are some safety precautions?
Warm up:
What are we doing in lab today?
What are some safety precautions?
What safety equipment should be worn at all times?
What do you do if you drop a hot crucible?
Agenda:
Review lab safety and procedure
Leave unit 1 packets on desk
Clear aisles – push in chairs and put bags under tables
Perform lab
Work on calculations and conclusion questions
OBJECTIVES
Calculate the empirical and molecular formula for a compound formed by chemical reaction.

14. You have a mole of sugar (C12H22O11) that weighs 342.34 g.
How many moles of C do you have? What is the weight in grams?