Lec5 Flashcards
(15 cards)
Entropy is …………
Is a measure of disorder in closed system disorder incrases -> entropy increases.
The total entropy of an __________ system never decreases.
isolated
______________: When the system approaches absolute zero temperature, all processes stop and the entropy of the system approaches the lowest
possible value• , No system can reach absolute zero
Third Law
Entropy, denoted by ‘S’, … As per the third law of thermodynamics,
the entropy of such a system is exactly _________.
Zero
Zeroth Law :The “zeroth law” states:
that two thermodynamic systems in thermal equilibrium with the same environment are in thermal equilibrium with each other.
Enthalpy is ………
The energy absorbed as heat during a chemical reaction at constant pressure (very few occur at constant volume) is represented by 🔼H
__________is the capacity to do work or supply heat.
Energy
Energy has no ________
mass or volume.
_______________is energy stored in bonds between atoms .
Chemical potential energy
The kinds of atoms and the arrangement of the atoms in a substance determine the amount of___________ stored in the substance.
energy
________is a form of energy that always flows from a warmer object to a cooler object.
Heat
Heat is represented by_____.
q
all chemical reactions and changes in physical state involve either:_________ of heat, or_________ of heat
release
absorption
______________ is any physical or chemical process that can occur on its own without the influence of any external factor. Cold, the melting of a piece of sugar in tea, iron rusting, the reaction of sodium with water
Spontaneous process
Gibbs free energy is ………
is a measure of chemical energy . All chemical systems tend naturally toward states of minimum Gibbs free energy
