Thermochemistry Video Assignment …

Thermochemistry Video Assignment
Please watch the following video Energy and Chemistry
Professor Hank: Energy & Chemistry: Crash Course Chemistry #17 /12
Link: https://www.youtube.com/watch?v=GqtUWyDR1fg
At what temperature do atoms have no energy? (Be sure to include a unit)____________________ (1)
DEFINITIONS – Include the symbol in the brackets ( ) – 5 marks
Potential Energy: ( )___________________________________________________________
First Law of Thermodynamics:___________________________________________________
Energy: ( )__________________________________________________________________
Work: ( )____________________________________________________________________
Heat: ( )_____________________________________________________________________
The System vs. The Surroundings
How are they different?__________________________________________________(1)
Internal Energy: ( )___________________________________________________________(1)
ΔE = q + w
Positive ΔE means the system is _______________ energy (1)
Negative ΔE means the system is ________________energy (1)
Exothermic Reaction:________________________________________________________ (1)
Endothermic Reaction:_______________________________________________________ (1)
Thermochemistry Video Assignment #2
Please watch the video Enthalpy: Crash Course Chemistry #18 and answer the following questions.

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DEFINITIONS
Heat:_______________________________________________________________________ (1)
Work:_____________________________________________________________________ (1)
Heat and work are _____________________ ____________________ meaning their amounts depend on the “path” taken, not just the starting and ending values (2)
Standard State: _______________________________________________________________(1)
State function:_______________________________________________________________(1)
Change in energy (ΔE) is a __________________ ___________________ meaning it is only dependent on the initial and final conditions (2)
Enthalpy:__________________________________________________________________(1)
Change in Enthalpy (ΔH) is equal to the heat gained or lost by the system.
Heat leaving the system is _________ while heat gained by the system is _________ (2)
Calorimetry:________________________________________________________________(1)
Standard Enthalpy of Formation:________________________________________________(1)
The enthalpy change for a __________ is equal to the sum of the enthalpy change of formation of all the __________ minus the sum of the enthalpy of formation of all of the __________ (3)
Hess’s Law:________________________________________________________________(1)
ΔHreaction = ∑n*ΔHproducts – ∑n*ΔHreactants
Thermochemistry Video Assignment #3
Please watch the video Calorimetry: Crash Course Chemistry #19 and answer the following questions.

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DEFINITIONS (5)
Enthalpy:_____________________________________________________________________
Hess’s Law:____________________________________________________________________
Standard Enthalpy of Formation:___________________________________________________
Calorimetry:________________________________________________________________
Calorimeter:________________________________________________________________
q = mcΔT is the same as ΔH=smΔT (4)
q=______________________________________________________________
c=s=____________________________________________________________
m=_____________________________________________________________
ΔT= _____________________________________________________________
Specific Heat Capacity: ________________________________________________________ (1)
Can be looked up in a reference book or the internet
Energy comes from the energy gained or released when chemical bonds are formed or broken
Why does the specific Heat give a different answer than Hess’s Law? (2)
___________________________________________________________________
________________________________________________________________
These are sources of error with the experiment
Thermochemistry Video Assignment #4
Please watch the video Entropy: Crash Course Chemistry #20 to answer the following questions.

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DEFINITIONS
Second Law of Thermodynamics:________________________________________________ (1)
When increasing the order of one system, the order of another system must decrease
Entropy (S):_______________________________________________________________(1)
ΔS =
n Sproducts –
n Sreactants
Spontaneous:_______________________________________________________________ (2)
_____Ba(OH)28H2O + _____NH4Cl → ______NH3 + _____BaCl2 + ______H2O (2 marks)
ΔH = ______ is positive because ___________________________________________(1marks)
ΔS = ______ is positive means _____________________________________(1 marks)
Gibb’s Free Energy:_____________________________________________________ (1 marks)
ΔGreaction =ΔH – TΔS
T must be constant
ΔH > TΔS means the reaction is ________________ driven (1 marks)
ΔH < TΔS means reaction is ________________ driven (1 marks) ΔG is _________________________ means the reaction is spontaneous (1 marks) ΔG is _________________________ means the reaction is nonspontaneous (1 marks)

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