Chemical reactions commonly need an initial input of energy to begin the process.
Maintaining this internal organization requires a continuous input of energy, because spontaneous chemical reactions always create disorganization.
This law basically states that all isolated systems, in the absence of an input of energy, relentlessly decay, or tend toward disorder.
Specially designed chimney cowls suck stale, moist air from the house while a heat exchanger keeps the thermal energy indoors.The house now requires remarkably little input of energy.
As with the synthesis of polysaccharides and lipids, the formation of the nucleic acids and proteins from their building blocks requires the input of energy.
The elements heavier than iron cannot be produced by fusion reactions between light elements; an input of energy is required to produce them.
The still heavier elements cannot be made in energy-releasing fusion reactions; an input of energy is required to produce them.
This reaction requires a substantial input of energy, much of which is captured in the bond that links the added phosphate group to ADP.
Without a continuing input of energy, the gas at the center would radiate its heat, lowering its pressure, and cooler gas would flow in from the outskirts, providing fresh fuel to make stars.
The evidence for the existence of these weak intermolecular forces is the fact that gases can be liquefied, that ordinary liquids exist and need a considerable input of energy for vaporization to a gas of independent molecules, and that many molecular compounds occur as solids.
In either case, a "hot" and a "cold" vessel or a "full" and "empty" vessel, the apparent result is two vessels that, with no input of energy from an external source, constitute a more orderly isolated system thus violating the second law of thermodynamics.
