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CHM 113: THERMODYNAMICS
QUESTIONS AND APPROVED ANSWERS
| GUARANTEED PASS | LATEST 2025-2026
What is thermodynamics? - Correct Answer-The study of energy
transformations
•based on energy, scientists would predict whether something is going
to happen or not
What is the difference between normal Chemistry and
thermodynamics? - Correct Answer-Normal chem assumed that
reactions would happen
•physical and chemical changes will always take place in reactions
Thermodynamics is more than just stating the obvious
•Sometimes systems transform and sometimes they don't
-asks why?
What is the example of thermodynamics skin and acid and base? -
Correct Answer-When it's a strong base and acid = water salt and heat
will be formed
-reaction occurs
When it's a strong/weak base or a strong/weak acid
-reaction sometimes occurs
When it's a weak acid and weak base
-the reaction doesn't occur
=all based on the transformation of energy
What is the system? - Correct Answer-a part of the universe on which
you focus your attention
Ex: water boiling is the system
What is the surroundings? - Correct Answer-everything else in the
universe except the system
Ex: everything but the water, so the beaker, atmosphere, etc.
, 2
What is the universe? - Correct Answer-The system + surroundings
What is the boundary? - Correct Answer-Something that separates the
system and surroundings, can be imaginary
Ex: Beaker when boiling water
How can one describe a system properly? - Correct Answer-They can
list the various states a system exists in
•solid, liquid, gas
What are state variables? - Correct Answer-Used to specify the state
of a system
•pressure, temp, density (not normal descriptions, scientific
descriptions)
What occurs during a process? - Correct Answer-A system may
change from one stage to another (initial reactants vs final reactants)
•two types of processes
1. Physical
2. Chemical
Endothermic process entails... - Correct Answer-Heat is absorbed and
stored in the system
Exothermic process entails... - Correct Answer-Stored energy in the
system is released as heat
How do exothermic and endothermic statements relate to one
another? - Correct Answer-They are simply statements of energy
conservation and interconversion
•whenever an endothermic reaction occurs, the energy must have
come from an endothermic reaction and vice versa
•energy is not created or destroyed in this process
first law of thermodynamics - Correct Answer-Energy can be
transferred and transformed, but it cannot be created or destroyed
•energy in the universe is conserved
CHM 113: THERMODYNAMICS
QUESTIONS AND APPROVED ANSWERS
| GUARANTEED PASS | LATEST 2025-2026
What is thermodynamics? - Correct Answer-The study of energy
transformations
•based on energy, scientists would predict whether something is going
to happen or not
What is the difference between normal Chemistry and
thermodynamics? - Correct Answer-Normal chem assumed that
reactions would happen
•physical and chemical changes will always take place in reactions
Thermodynamics is more than just stating the obvious
•Sometimes systems transform and sometimes they don't
-asks why?
What is the example of thermodynamics skin and acid and base? -
Correct Answer-When it's a strong base and acid = water salt and heat
will be formed
-reaction occurs
When it's a strong/weak base or a strong/weak acid
-reaction sometimes occurs
When it's a weak acid and weak base
-the reaction doesn't occur
=all based on the transformation of energy
What is the system? - Correct Answer-a part of the universe on which
you focus your attention
Ex: water boiling is the system
What is the surroundings? - Correct Answer-everything else in the
universe except the system
Ex: everything but the water, so the beaker, atmosphere, etc.
, 2
What is the universe? - Correct Answer-The system + surroundings
What is the boundary? - Correct Answer-Something that separates the
system and surroundings, can be imaginary
Ex: Beaker when boiling water
How can one describe a system properly? - Correct Answer-They can
list the various states a system exists in
•solid, liquid, gas
What are state variables? - Correct Answer-Used to specify the state
of a system
•pressure, temp, density (not normal descriptions, scientific
descriptions)
What occurs during a process? - Correct Answer-A system may
change from one stage to another (initial reactants vs final reactants)
•two types of processes
1. Physical
2. Chemical
Endothermic process entails... - Correct Answer-Heat is absorbed and
stored in the system
Exothermic process entails... - Correct Answer-Stored energy in the
system is released as heat
How do exothermic and endothermic statements relate to one
another? - Correct Answer-They are simply statements of energy
conservation and interconversion
•whenever an endothermic reaction occurs, the energy must have
come from an endothermic reaction and vice versa
•energy is not created or destroyed in this process
first law of thermodynamics - Correct Answer-Energy can be
transferred and transformed, but it cannot be created or destroyed
•energy in the universe is conserved
