WorksheetsEntropy
Total questions: 26
Worksheet time: 13mins
The Universe tends toward ___
order
disorder
harmony
kindness
Which law of thermodynamics says that "any spontaneous process increases the randomness of the Universe"?
zeroth
first
second
third
The very act of putting one system in order requires that other systems become ___
disordered
ordered as well
hotter
colder
For your lunch to give you energy, it has to be broken down into which less ordered nutrients?
greases, fats, and lipids
carbohydrates, sugars, and starches
carbohydrates, proteins, and lipids
proteins and amino acids
The macronutrients from your lunch were broken down even further as they were converted to ___
proteins
energy in your cells
starches
polymers
Cleaning your house in fact increases the overall disorder of ___
your house
your office
your kitchen
the Universe
In chemistry, the measure of molecular randomness, or disorder, is dubbed ___
entropy
ethalpy
disorderly
Gibb's free energy
The Second Law of Thermodynamics says that "any spontaneous process increases the ___"
order of the Universe
disorder of the Universe
temperature of the system
temperature of the surroundings
"Spontaneous" simply means a process that doesn't need ___
a spark to ignite it
parental approval
to be at a specific temperature
outside energy to proceed
Anything that increases the disorder of the Universe ___
is not permitted
happens spontaneously
occurs instantly
is exothermic
Entropy is another state function, as it doesn't depend on ___
the initial state
the final state
the initial or final states
the pathway taken
Which letter is used to represent entropy in an equation?
the capital letter "S"
the capital letter "H"
lowercase letter "q"
lowercase letter "t"
What is a reaction that absorbs heat from the surroundings called?
an endothermic reaction
an exothermic reaction
a combustion reaction
a precipitation reaction
The enthalpy change of the reaction was found using Hess's Law and ___
common entropies of creation
Gibb's Law
standard enthalpies of formation
the van der Waals equation
What does a positive value for the change in standard enthalpy indicate?
the reaction absorbed thermal energy
the reaction emitted thermal energy
the reaction emitted radiation
the reaction absorbed photons
What does a positive value for the change in standard entropy mean?
the products are more ordered than the reactants
the products are more disordered than the reactants
the reaction absorbed thermal energy
the reaction emitted thermal energy
Who formulated an equation to explain the amount of energy in a system that was available do useful work?
Johannes Diderik van der Waals
Josiah Willard Gibbs
Antoine Henri Becquerel
James Prescott Joule
The amount of energy in a system that is available to do useful work is called ___
practical potential energy
the total energy of the system
standard enthalpy
Gibbs free energy
Like enthalpy and entropy, Gibbs free energy is a ___
quadratic function
logarithmic function
state function
path function
Which letter is used to represent Gibbs free energy in an equation?
capital "F"
capital "G"
lowercase "g"
lowercase "f"
The change in Gibbs free energy for a reaction equals the change in standard enthalpy minus ___
the change in standard enthalpy
the sum of the temperature and the change in standard entropy
the product of the temperature and the change in standard entropy
the change in standard entropy
The barium hydroxide reaction had a value of TΔS higher than the ΔH, so it was ___
enthalpy driven
entropy driven
temperature driven
reactant favored
In the barium hydroxide reaction the balanced equation goes from three total moles of solid reactants to ___
one mole of gas
two moles of liquid
ten moles of solid
thirteen moles of products
If ΔG is positive, the reaction is ___
not spontaneous
spontaneous
in an equilibrium state
not discernible
If ΔG is negative, the reaction is ___
not spontaneous
spontaneous
in an equilibrium state
undefined
If ΔG is zero, the reaction is ___
not spontaneous
spontaneous
in an equilibrium state
entropy driven
