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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!
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