Wednesday, Nov. 14Wednesday, Nov. 14thth: “A” Day: “A” DayThursday, Nov. 15Thursday, Nov. 15thth: “B” Day: “B” Day

AgendaAgendaChapter 10 review problems/questions?Chapter 10 review problems/questions?

Chapter 10 Jeopardy Review GameChapter 10 Jeopardy Review Game

Homework:Homework:

Vocabulary crossword puzzleVocabulary crossword puzzle

Next Time:Next Time:

Chapter 10 Test/Concept Chapter 10 Test/Concept Review/Crossword Puzzle DueReview/Crossword Puzzle Due

Good Luck to musicians this Good Luck to musicians this weekend at the IMEA music weekend at the IMEA music

festival in DeKalb!festival in DeKalb!

Chapter 10 Short Answer Test Chapter 10 Short Answer Test QuestionsQuestions

The “Critical Thinking” category in the The “Critical Thinking” category in the Jeopardy game contains 5 of the 6 short Jeopardy game contains 5 of the 6 short answer test questions.answer test questions.

Here’s the 6Here’s the 6thth: :

In the “Calorimetry and Hess’s Law In the “Calorimetry and Hess’s Law lab, the sodium hydroxide (NaOH) lab, the sodium hydroxide (NaOH) was described as “hygroscopic”. was described as “hygroscopic”. ExplainExplain what this term means. what this term means.

Causes of Causes of ChangeChangeCh #10Ch #10

THE RULES:

•You will be in 5 teams

• The winning team will each receive $1 mole

• No whining!

And now…here is the host of Jeopardy…

Mrs. Elfline

Let’s Get Ready to play…

Today’s Categories are:

VocabularyVocabulary

Fill in the BlankFill in the Blank

CalculationsCalculations

Critical ThinkingCritical Thinking

DoubleDoubleMeaningMeaning

$100

$200

$300

$400

$500

VocabularyVocabulary

$100

$200

$300

$400

$500

Fill in the Fill in the BlankBlank

$100

$200

$300

$400

$500

CalculationsCalculations

$100

$200

$300

$400

$500

CriticalCritical ThinkingThinking

$100

$200

$300

$400

$500

DoubleDoubleMeaningMeaning

DDDD

FJFJ

The total energy content of a The total energy content of a system at constant pressure system at constant pressure

Answer…Answer…

EnthalpyEnthalpy

100100

A measure of the average kinetic A measure of the average kinetic energy of the particles in a sample energy of the particles in a sample

of matterof matter

Answer…Answer…

Temperature Temperature

200200

The study of all energy changesThe study of all energy changes

Answer…Answer…

ThermodynamicsThermodynamics

300300

The disorder or randomness of a The disorder or randomness of a systemsystem

Answer…Answer…

EntropyEntropy

400400

The amount of energy as heat The amount of energy as heat required to raise the temperature required to raise the temperature of 1 mole of a substance by 1Kof 1 mole of a substance by 1K

Answer…Answer…

Molar Heat CapacityMolar Heat Capacity

500500

Answer…Answer…

The energy transferred The energy transferred between two objects that are between two objects that are at different temperatures is at different temperatures is

called _______called _______

100100

HeatHeat

Answer…Answer…

The The unitunit for temperature used in for temperature used in thermodynamic equations is thermodynamic equations is

_____ _____

KK(Kelvin)(Kelvin)

200200

_______ calorimetry uses an _______ calorimetry uses an insulating vessel to measure insulating vessel to measure

changes in energy instead of a changes in energy instead of a water bath.water bath.

Answer…Answer…

AdiabaticAdiabatic

300300

The standard enthalpy of The standard enthalpy of formation of an element is ______.formation of an element is ______.

Answer…Answer…

ZeroZero

400400

The overall enthalpy change in a The overall enthalpy change in a reaction is equal to the sum of the reaction is equal to the sum of the

enthalpy changes of individual enthalpy changes of individual steps is a statement of _______steps is a statement of _______

________.________.

Answer…Answer…

Hess’s LawHess’s Law

500500

How do you convert How do you convert °C to K?°C to K?

Answer…Answer…

Add 273 (or 273.15)Add 273 (or 273.15)

100100

In the equation q = nCIn the equation q = nCΔΔT, what do the T, what do the variables stand for?variables stand for?

Answer…Answer…

q = energy as heatq = energy as heatn = number of molesn = number of moles

C = molar heat capacityC = molar heat capacityΔΔT = change in temperatureT = change in temperature

200200

What is the molar heat capacity of What is the molar heat capacity of 150 g of Fe that absorbed 160 J of 150 g of Fe that absorbed 160 J of energy as it was heated from 25energy as it was heated from 25°°C C

to 75to 75°°C.C.

Answer…Answer…

1.2 J/mol1.2 J/mol∙K∙K

300300

What is the molar enthalpy change What is the molar enthalpy change when a block of aluminum is when a block of aluminum is

cooled by 60 K? The molar heat cooled by 60 K? The molar heat capacity of aluminum is capacity of aluminum is

24.2 J/K24.2 J/K∙mol.∙mol.

Answer…Answer…

-1,452 J/mol-1,452 J/mol

400400

Answer…Answer…

Use the data table in your book to the find ΔH for the following reaction:

4Al (s) + 6H2O (l) 2Al2O3 (s) + 6H2 (g)

-1,637 kJ-1,637 kJ

500500

ExplainExplain the difference between the difference between heat and temperature.heat and temperature.

Answer…Answer…

Heat: the energy transferred Heat: the energy transferred between objects that are at between objects that are at

different temperaturesdifferent temperaturesTemperature: a measure of the Temperature: a measure of the

average kinetic energy of the average kinetic energy of the particles in a sample of matter particles in a sample of matter

ORORa measure of how hot or cold a measure of how hot or cold

something issomething is100100

HowHow is molar heat capacity related is molar heat capacity related to specific heat?to specific heat?

Answer…Answer…

Molar Heat Capacity: energy needed Molar Heat Capacity: energy needed to raise the temperature of 1 mole of to raise the temperature of 1 mole of

a substance by 1Ka substance by 1KSpecific Heat: energy needed to Specific Heat: energy needed to

raise the temperature of 1 gram of a raise the temperature of 1 gram of a substance by 1Ksubstance by 1K

OROR(molar mass) (specific heat) = molar (molar mass) (specific heat) = molar

heat capacityheat capacity

200200

HowHow is a change in Gibbs energy is a change in Gibbs energy related to changes in enthalpy and related to changes in enthalpy and

entropy?entropy?

Answer…Answer…

ΔΔG = G = ΔΔH - TH - TΔΔSS

300300

ExplainExplain why the effects of entropy why the effects of entropy increase as temperature increase as temperature

increases.increases.

Answer…Answer…

G = H - TSG = H - TSAs the temperature increases, the As the temperature increases, the kinetic energy of the particles also kinetic energy of the particles also

increases, contributing to more increases, contributing to more disorder in the system. Also, as T disorder in the system. Also, as T increases, S is being multiplied by increases, S is being multiplied by an even bigger number, increasing an even bigger number, increasing the effects of entropy even further.the effects of entropy even further.

400400

How do the signs (+ or -) of How do the signs (+ or -) of ΔΔH H and and ΔΔS predict the spontaneity of S predict the spontaneity of

a reaction?a reaction?

Answer…Answer…

- - ΔΔH and +H and +ΔΔS = spontaneousS = spontaneous

+ +ΔΔH and -H and -ΔΔS = non-spontaneous S = non-spontaneous

500500

The largest city in California is The largest city in California is what element?what element?

Answer…Answer…

La La (Lanthanum)(Lanthanum)

100100

One of Santa’s favorite words is One of Santa’s favorite words is what element?what element?

Answer…Answer…

HoHo(Holmium)(Holmium)

200200

What element is short for YMCA?What element is short for YMCA?

Answer…Answer…

YY(Yttrium)(Yttrium)

300300

Which element is 7Which element is 7thth in the musical in the musical scale that begins “Do, Re, Mi…”?scale that begins “Do, Re, Mi…”?

Answer…Answer…

TiTi(Titanium)(Titanium)

400400

The home state of Bill Clinton is The home state of Bill Clinton is which element?which element?

Answer…Answer…

ArAr(Argon)(Argon)

500500

Daily DoubleDaily DoubleHow much do you want

to wager?

Daily DoubleDaily Double

FINALFINALJEOPARDYJEOPARDY

CATEGORY:CATEGORY:

CalculationsCalculations

How much do you want to wager?

Proceed…Proceed…

For glucose, ΔHfo = -1,263

kJ/mol. Calculate the enthalpy change when 1 mol

of C6H12O6 (s) combusts to from CO2 (g) and H2O (l).

Hint: you will need to use data tables from your book…

Proceed…Proceed…

- 2,813 kJ- 2,813 kJ

Proceed…Proceed…

Thanks for Thanks for PLAYING!PLAYING!