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Template byBill Arcuri, WCSD
Click Once to BeginJEOPARDY!Chemistry 7 Final Review
By:
Catherine Flanagan
Template byBill Arcuri, WCSD
JEOPARDY!
100 100 100 100 100 100
200 200 200 200 200 200
300 300 300 300 300 300
400 400 400 400 400 400
500 500 500 500 500 500
VocabularyEndothermic
and Exothermic
Calorimetryand Heat Capacity
Practice
Problems
Enthalpy And Hess’s
Law
Change in State
Template byBill Arcuri, WCSD
A Chemical reaction during which energy is transferred from the surroundings to the
system
Template byBill Arcuri, WCSD
If the ΔH is negative is it an endothermic or exothermic process?
Vocabulary: 200
Template byBill Arcuri, WCSD
The amount of energy it takes a certain substance to
raise 1 gram of water 1 degree Celsius.
Template byBill Arcuri, WCSD
If NH3NO3 is dissolved in water and the temperature decreases is the process
endothermic or exothermic?
Endothermic and Exothermic: 100
Template byBill Arcuri, WCSD
Give an example of an exothermic phase change
Endothermic and Exothermic: 200
Template byBill Arcuri, WCSD
Give an example of an endothermic phase change
Endothermic and Exothermic: 300
Template byBill Arcuri, WCSD
If a 10.0g solid is dissolved in a 25.3°C sample of water and the final temperature is 27.4°C What is the value of
ΔH?
(Cp=.874 J/g°C)
Calorimetry and Heat Capacity: 300
Template byBill Arcuri, WCSD
If 3.4 mol of Aluminum is dissolved in water and the temperature changes from
25°C to 318°K and the specific heat is .874J/g°C What
is the ΔH value?
Calorimetry and Heat Capacity: 400
Template byBill Arcuri, WCSD
If 1520 J are added to 24.5g of water at 63.1°C
what will the final temperature be?
Practice Problems: 200
Template byBill Arcuri, WCSD
45.8g of an unknown substance at 85.4°C is placed
in 67.9g of water at 16.1°C, and the final temperature of the system is 22.7°C what is the specific heat capacity of
the substance?
Practice Problems: 300
Template byBill Arcuri, WCSD
If you dissolve 3g of an unknown substance and the temperature
changes 32°C and 56J are produced what is the specific heat?
Practice Problems: 400
Template byBill Arcuri, WCSD
Given the following information about water:
Enthalpy of fusion: 80.87 cal/gSpecific heat of ice: .51 cal/g°CSpecific heat of water: 1cal/g°C
Specific heat of steam: .48 cal/g°CEnthalpy of vaporization: 547.2cal/g
How many calories are needed to warm 53.7g of water at -36.7°C to
136°C?
Practice Problems: 500Daily Double!!!
Template byBill Arcuri, WCSD
What is the value for ΔH for the following reaction?
CS2(l) + 2 O2(g) → CO2(g) + 2 SO2(g)
Given:C(s) + O2(g) → CO2(g); ΔHf = -393.5 kJ/molS(s) + O2(g) → SO2(g); ΔHf = -296.8 kJ/mol
C(s) + 2 S(s) → CS2(l); ΔHf = 87.9 kJ/mol
Enthalpy and Hess’s Law: 200
Template byBill Arcuri, WCSD
If you want to warm 4.5g of water from 34.6°C to
62.1°C how many joules would you need to add to
the water? (Specific heat of water= 4.18)
Enthalpy and Hess’s Law: 300
Template byBill Arcuri, WCSD
What mass of antimony can you melt with 9451J if the heat of
fusion is 165J/g ?
Enthalpy and Hess’s Law: 400
Template byBill Arcuri, WCSD
How many joules are needed to melt 89.3g of antimony if the heat
fusion is 165 J/g ?
Enthalpy and Hess’s Law: 500
Template byBill Arcuri, WCSD
Changes In State: 300
Gas
Boiling
Solid
Time
MeltingTem
pera
ture
What phase belongs in the yellow box?
Template byBill Arcuri, WCSD
What happens on a molecular level to the atoms
when they change from a liquid to a gas?
Changes In State: 400
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The molecules break away from each other and are no
longer a define volume.
Template byBill Arcuri, WCSD
Why must one add gas to car tires in the winter but
take gas out of car tires in the summer?
Changes In State: 500
Template byBill Arcuri, WCSD
Because the gas molecules don’t move as
fast in the winter therefore the tires would be deflated, where as the summer the molecules are faster and your tires
will grow.