Wednesday, Nov. 14th: “A” Day
Thursday, Nov. 15th: “B” Day
Agenda
Chapter 10 review problems/questions?
Chapter 10 Jeopardy Review Game
Homework:
Vocabulary crossword puzzle
Next Time:
Chapter 10 Test/Concept
Review/Crossword Puzzle Due
Good Luck to musicians this weekend
at the IMEA music festival in
DeKalb!
Chapter 10 Short Answer Test
Questions
The “Critical Thinking” category in the
Jeopardy game contains 5 of the 6 short
answer test questions.
Here’s the 6th:
In the “Calorimetry and Hess’s Law lab,
the sodium hydroxide (NaOH) was
described as “hygroscopic”. Explain
what this term means.
Causes of
Change
Ch #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:
Vocabulary
Fill in the Blank
Calculations
Critical Thinking
Double
Meaning
Vocabulary
Fill in the
Blank
Calculations
Critical
Thinking
Double
Meaning
$100 $100 $100 $100 $100
FJ
$200 $200 $200 $200 $200
$300 $300 $300 $300 $300
$400 $400 $400 $400 $400
$500 $500 $500 $500 $500
DD
The total energy content of a
system at constant pressure
Answer…
Enthalpy
100
A measure of the average kinetic
energy of the particles in a sample
of matter
Answer…
Temperature
200
The study of all energy changes
Answer…
Thermodynamics
300
The disorder or randomness of a
system
Answer…
Entropy
400
The amount of energy as heat
required to raise the temperature
of 1 mole of a substance by 1K
Answer…
Molar Heat Capacity
500
The energy transferred
between two objects that are
at different temperatures is
called _______
Answer…
Heat
100
The unit for temperature used in
thermodynamic equations is
_____
Answer…
K
(Kelvin)
200
_______ calorimetry uses an
insulating vessel to measure
changes in energy instead of a
water bath.
Answer…
Adiabatic
300
The standard enthalpy of formation
of an element is ______.
Answer…
Zero
400
The overall enthalpy change in a
reaction is equal to the sum of the
enthalpy changes of individual
steps is a statement of _______
________.
Answer…
Hess’s Law
500
How do you convert °C to K?
Answer…
Add 273 (or 273.15)
100
In the equation q = nCΔT, what do the
variables stand for?
Answer…
q = energy as heat
n = number of moles
C = molar heat capacity
ΔT = change in temperature
200
What is the molar heat capacity of
150 g of Fe that absorbed 160 J of
energy as it was heated from 25°C
to 75°C.
Answer…
1.2 J/mol∙K
300
What is the molar enthalpy change
when a block of aluminum is
cooled by 60 K? The molar heat
capacity of aluminum is
24.2 J/K∙mol.
Answer…
-1,452 J/mol
400
Use the data table in your book to the
find ΔH for the following reaction:
4Al (s) + 6H2O (l)
2Al2O3 (s) + 6H2 (g)
Answer…
-1,637 kJ
500
Explain the difference between
heat and temperature.
Answer…
Heat: the energy transferred
between objects that are at
different temperatures
Temperature: a measure of the
average kinetic energy of the
particles in a sample of matter
OR
a measure of how hot or cold
something is
100
How is molar heat capacity related
to specific heat?
Answer…
Molar Heat Capacity: energy needed
to raise the temperature of 1 mole of
a substance by 1K
Specific Heat: energy needed to
raise the temperature of 1 gram of a
substance by 1K
OR
(molar mass) (specific heat) = molar
heat capacity
200
How is a change in Gibbs energy
related to changes in enthalpy and
entropy?
Answer…
ΔG = ΔH - TΔS
300
Explain why the effects of entropy
increase as temperature
increases.
Answer…
G = H - TS
As the temperature increases, the
kinetic energy of the particles also
increases, contributing to more
disorder in the system. Also, as T
increases, S is being multiplied by
an even bigger number, increasing
the effects of entropy even further.
400
How do the signs (+ or -) of ΔH
and ΔS predict the spontaneity of
a reaction?
Answer…
- ΔH and +ΔS = spontaneous
+ΔH and -ΔS = non-spontaneous
500
The largest city in California is
what element?
Answer…
La
(Lanthanum)
100
One of Santa’s favorite words is
what element?
Answer…
Ho
(Holmium)
200
What element is short for YMCA?
Answer…
Y
(Yttrium)
300
th
7
Which element is
in the musical
scale that begins “Do, Re, Mi…”?
Answer…
Ti
(Titanium)
400
The home state of Bill Clinton is
which element?
Answer…
Ar
(Argon)
500
Daily Double
How much do you want
to wager?
Daily Double
FINAL
JEOPARDY
CATEGORY:
Calculations
How much do you want
to wager? 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…
- 2,813 kJ
Proceed…
Thanks for
PLAYING!