Tuesday, May 13Tuesday, May 13thth: “A” Day: “A” DayWednesday, May 14Wednesday, May 14thth: “B” Day: “B” Day

AgendaAgendaChapter 7 Review ReviewChapter 7 Review Review

Chapter 7 Jeopardy ReviewChapter 7 Jeopardy Review

Next time:Next time:

Concept Review dueConcept Review due

Chapter 7 TestChapter 7 Test

Chapter 7 ReviewChapter 7 Review

2. 2. What term What term is used to describe the mass is used to describe the mass in grams of 1 mol of a substance?in grams of 1 mol of a substance?

Molar MassMolar Mass

Chapter 7 ReviewChapter 7 Review

35.35. How many atoms How many atoms of gold are there in a pure gold ring of gold are there in a pure gold ring with a mass of 10.6 g?with a mass of 10.6 g?

10.6 g Au X 10.6 g Au X 1 mole Au1 mole Au = .0538 moles Au = .0538 moles Au

196.97 g Au196.97 g Au

.0538 moles Au X .0538 moles Au X 6.022 X 106.022 X 102323 atoms Au atoms Au

1 mole Au1 mole Au

3.24 x 103.24 x 102222 atoms Au atoms Au

Chapter 7 ReviewChapter 7 Review45.45. Find the molar mass Find the molar mass of the following compounds:of the following compounds:

c)c) Potassium dichromatePotassium dichromate

KK1+ 1+ CrCr22OO7 7 2-2-

KK22CrCr22OO77

K: 2(39.10) = 78.20K: 2(39.10) = 78.20

++ Cr: 2(52.00) = 104.00Cr: 2(52.00) = 104.00

O: 7(16.00) = 112.0O: 7(16.00) = 112.0

294.20 g/mol294.20 g/mol

Chapter 7 ReviewChapter 7 Review45.45. Find the molar mass Find the molar mass of the following compounds:of the following compounds:

d)d) Magnesium nitrateMagnesium nitrateMgMg2+ 2+ NONO33

1-1-

Mg(NOMg(NO33))22

Mg: 24.31 = 24.31Mg: 24.31 = 24.31++ N: 2(14.01) = 28.02N: 2(14.01) = 28.02

O: 6(16.00) = 96.00O: 6(16.00) = 96.00

148.33 g/mol148.33 g/mol

Chapter 7 ReviewChapter 7 Review

50.50. An oxide of phosphorus is 56.34% phosphorus, and An oxide of phosphorus is 56.34% phosphorus, and the rest is oxygen. the rest is oxygen. Calculate the empirical formulaCalculate the empirical formula for for this compound.this compound.

56.34 g P X 56.34 g P X 1 mol P1 mol P = = 1.819 mol P 1.819 mol P = 1 mol P (2)= 1 mol P (2)

30.97 g P 1.819 2 mol P30.97 g P 1.819 2 mol P

43.66 g O X 43.66 g O X 1 mol O 1 mol O = = 2.729 mol O2.729 mol O = 1.5 mol O (2) = 1.5 mol O (2)

16.00 g O 1.819 3 mol O16.00 g O 1.819 3 mol O

PP22OO33

Chapter 7 ReviewChapter 7 Review51.51. The empirical formula of the anticancer drug The empirical formula of the anticancer drug

altretamine is Caltretamine is C33HH66NN22. The experimental molar . The experimental molar

mass is 210 g/mol. mass is 210 g/mol. What is the molecular formulaWhat is the molecular formula??

C: 3(12.01) = 36.03 C: 3(12.01) = 36.03 210210 = 3 = 3++ H: 6(1.01) = 6.06 70.11H: 6(1.01) = 6.06 70.11

N: 2(14.01) = 28.02N: 2(14.01) = 28.02 70.11 g/mol70.11 g/mol

3(C3(C33HH66NN22) = ) = CC99HH1818NN66

Jeopardy Teams2A

Team #1: Megan, Chris, Emily, Taylor, JordanTeam #1: Megan, Chris, Emily, Taylor, Jordan

Team #2: Connor, Colleen, Ben, Desiree, Team #2: Connor, Colleen, Ben, Desiree, RachaelRachael

Team #3: Paityn, Zendra, Jake, Ashley, TabithaTeam #3: Paityn, Zendra, Jake, Ashley, Tabitha

Team #4: Austin, Drew, Krits, Lauren, AllieTeam #4: Austin, Drew, Krits, Lauren, Allie

Team #5: Stephanie, Jackie, Lydia, Brooke, MyaTeam #5: Stephanie, Jackie, Lydia, Brooke, Mya

Jeopardy Teams4A

Team #1: Troy, Cody, Anna, DaleahTeam #1: Troy, Cody, Anna, Daleah

Team #2: Jordan, Rebecca, AbbyTeam #2: Jordan, Rebecca, Abby

Team #3: Josh, Ashley, SarahTeam #3: Josh, Ashley, Sarah

Team #4: Morgan, Eric, BrookTeam #4: Morgan, Eric, Brook

Team #5: Tate, Mason, KoreyTeam #5: Tate, Mason, Korey

Jeopardy Teams1B

Team #1: Autumn, Ashley, Kyle, MorgonTeam #1: Autumn, Ashley, Kyle, Morgon

Team #2: Christian, Allie, Hunter, KelseyTeam #2: Christian, Allie, Hunter, Kelsey

Team #3: Alyssa, Andy, Rachel M., KrystaTeam #3: Alyssa, Andy, Rachel M., Krysta

Team #4: Phoenix, Emily, Mason, WhitneyTeam #4: Phoenix, Emily, Mason, Whitney

Team #5: Rachel D., Sydney, MichaelTeam #5: Rachel D., Sydney, Michael

Jeopardy Teams3B

Team #1: Kellie, RJ, Tom, AllysaTeam #1: Kellie, RJ, Tom, Allysa

Team #2: Merik, Danika, Michelle, HollyTeam #2: Merik, Danika, Michelle, Holly

Team #3: Kenzie, Justin, Adam, KaitlynTeam #3: Kenzie, Justin, Adam, Kaitlyn

Team #4: Hunter, Molly, Eryn, NoahTeam #4: Hunter, Molly, Eryn, Noah

Team #5: Shelby, Dylan, AlexandraTeam #5: Shelby, Dylan, Alexandra

Chapter 7Chapter 7““The Mole & The Mole &

Chemical Chemical Composition”Composition”

THE RULES:

There will be 5 teams

Mrs. Elfline’s decisions are final – that means no whining!

Each member of the winning team will receive $1 mole money

And now…here is the host of Jeopardy…

Mrs. Elfline

Let’s Get Ready to play…

Today’s Categories are:

DefinitionsDefinitions

This ‘n ThatThis ‘n That

CalculationsCalculations

CalculationsCalculations

Rebus PuzzlesRebus Puzzles

$100

$200

$300

$400

$500

DefinitionsDefinitions

$100

$200

$300

$400

$500

This ‘n ThatThis ‘n That

$100

$200

$300

$400

$500

CalculationsCalculations

$100

$200

$300

$400

$500

CalculationsCalculations

$100

$200

$300

$400

$500

Rebus PuzzlesRebus Puzzles

FJFJ

The number of atoms in 1 mole of The number of atoms in 1 mole of any pure substance any pure substance

Answer…Answer…

Avogadro’s NumberAvogadro’s Number

OROR

6.022 X 106.022 X 102323

100100

The unit for molar mass The unit for molar mass

Answer…Answer…

g/moleg/mole

OROR

grams per molegrams per mole

200200

What 2 things does a chemical What 2 things does a chemical formula tell you?formula tell you?

Answer…Answer…

1. 1. What What elements are in a elements are in a compoundcompound

2. 2. How manyHow many atoms of each atoms of each element are in a compoundelement are in a compound

300300

A formula that shows the A formula that shows the simplest simplest whole-number ratiowhole-number ratio of the atoms in of the atoms in

a compounda compound

Answer…Answer…

Empirical FormulaEmpirical Formula

400400

What are isotopes? What are isotopes?

Answer…Answer…

Atoms of the same element that Atoms of the same element that have have different number of neutronsdifferent number of neutrons..

500500

Answer…Answer…

Which has more atoms: Which has more atoms: 1 mole of gold or 1 mole of silver?1 mole of gold or 1 mole of silver?

100100

They both have the same number They both have the same number of atoms, 6.022 X 10of atoms, 6.022 X 102323

Answer…Answer…

How many hydrogen atoms are How many hydrogen atoms are there in 1 molecule of ammonium there in 1 molecule of ammonium

carbonate, (NHcarbonate, (NH44))22COCO33??

88

200200

To find the molecular formula from To find the molecular formula from the empirical formula, you need to the empirical formula, you need to

calculate…calculate…

Answer…Answer…

The Molar Mass of the Empirical The Molar Mass of the Empirical FormulaFormula

300300

As the atomic masses of the As the atomic masses of the elements in the periodic table elements in the periodic table

decreases, the number of atoms in decreases, the number of atoms in one mole of the element…one mole of the element…

Answer…Answer…

Stays the sameStays the same

1 mole = 6.022 X 101 mole = 6.022 X 102323 atoms of atoms of ANY elementANY element

400400

If a compound has a molecular If a compound has a molecular formula of Xformula of X22YY44, what is it’s , what is it’s

empirical formula?empirical formula?

Answer…Answer…

XYXY22

500500

How many atoms are present in How many atoms are present in 2.5 moles of aluminum, Al?2.5 moles of aluminum, Al?

Answer…Answer…

1.5 X 101.5 X 102424 atoms Al atoms Al

100100

How many moles of gold are present in How many moles of gold are present in 150 grams of Au?150 grams of Au?

Answer…Answer…

.76 moles Au.76 moles Au

200200

A compounds empirical formula is A compounds empirical formula is BHBH33. If the experimental molar . If the experimental molar

mass is 27.67 g/mole, what is the mass is 27.67 g/mole, what is the molecular formula?molecular formula?

Answer…Answer…

BB22HH66

300300

What is the percentage What is the percentage composition of HCl?composition of HCl?

Answer…Answer…

2.77 % Hydrogen2.77 % Hydrogen

97.23 % Chlorine97.23 % Chlorine

400400

Calculate the molar mass of Calculate the molar mass of calcium nitrate, Ca(NOcalcium nitrate, Ca(NO33))22..

Answer…Answer…

164.10 g/mole164.10 g/mole

500500

Calculate the molar mass of Calculate the molar mass of titanium(IV) oxide, TiOtitanium(IV) oxide, TiO22..

Answer…Answer…

79.87 g/mole79.87 g/mole

100100

What is the mass (in grams) of What is the mass (in grams) of 5.600 moles of sodium, Na?5.600 moles of sodium, Na?

Answer…Answer…

128.7 grams Na128.7 grams Na

200200

Calculate the average atomic Calculate the average atomic mass of rubidium if 72.17% of its mass of rubidium if 72.17% of its atoms have a mass of 84.91 amu atoms have a mass of 84.91 amu and 27.83% of its atoms have a and 27.83% of its atoms have a

mass of 86.91 amu.mass of 86.91 amu.

Answer…Answer…

85.47 amu85.47 amu

300300

What is the percentage What is the percentage composition of quartz, SiOcomposition of quartz, SiO22??

Answer…Answer…

46.75 % Si46.75 % Si

53.25 % O53.25 % O

400400

What is the empirical formula for a What is the empirical formula for a compound that is 33.36 % compound that is 33.36 %

calcium, 26.69 % sulfur, and 40.00 calcium, 26.69 % sulfur, and 40.00 % oxygen?% oxygen?

Answer…Answer…

CaSOCaSO33

500500

Answer…Answer…

Scrambled EggsScrambled Eggs

100100

Answer…Answer…

Forgive and forgetForgive and forget

(4 give/ 4 get)(4 give/ 4 get)

200200

Answer…Answer…

No U turnNo U turn

300300

Answer…Answer…

Diamond in the roughDiamond in the rough

400400

Answer…Answer…

Missing youMissing you

(U)(U)

500500

Daily DoubleDaily DoubleHow much do you want

to wager?

Daily DoubleDaily Double

FINALFINALJEOPARDYJEOPARDY

CATEGORY:CATEGORY:

Rebus PuzzlesRebus Puzzles

How much do you want to wager?

Proceed…Proceed…

Proceed…Proceed…

You are full of baloney!

(below knee)

Proceed…Proceed…

Thanks for Thanks for PLAYING!PLAYING!