Flashcards in Thermodynamics Deck (9)
Exists in many forms, such as heat, light, chemical energy, and electrical energy.
Energy is the ability to bring about change or to do work.
Thermo - heat, dynamics - movement
The science that deals with the relationships and conversions between heat and other forms of energy.
The study of energy.
If two systems are in thermal equilibrium with a third system, they must be in thermal equilibrium with each other.
If A = B and B = C, then A = C.
Conservation of energy—energy can be neither created nor destroyed. However, energy can change forms, and energy can flow from one place to another. The total energy of an isolated system does not change.
Heat flows from hot to cold.
There are limits on converting energy from one form to another – never 100% efficient.
For a closed system, disorder (entropy) increases.
Energy spontaneously disperses from being localized to becoming spread out, evolving towards thermodynamic equilibrium—the state of maximum entropy of the system.
The entropy of a perfect crystal of any pure substance approaches zero as the temperature approaches absolute zero.
Absolute zero is 0 K.
Atoms stop moving.
The transfer of energy (heat) between objects that are in physical contact.
The movement of energy (air/heat) from hot places to cold places.
The transfer of energy between an object and its environment, due to fluid motion.