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As the current knowledge of science is (the laws of thermodynamic), the entropy of a closed system cannot be reversed. Entropy is not a process, but a a quantity that measures how "random" or "disordered" a system is. The Second Law of Thermodynamics says that entropy only ever increases spontaneously.

23 Related Question Answers Found

#### Araia Jigun

Explainer### Can entropy be decreased?

It just says that the total

**entropy**of the universe**can**never**decrease**.**Entropy can decrease**somewhere, provided it increases somewhere else by at least as much. The**entropy**of a system**decreases**only when it interacts with some other system whose**entropy**increases in the process. That is the law.#### Naouel Mañon

Explainer### Is the entropy of the universe increasing or decreasing?

This statement is usually called the principle of

**entropy increase**. Irreversible or spontaneous processes can occur only in that? direction for which the**entropy of the universe**or that of an isolated system,**increases**. These processes cannot occur in the direction of**decreasing entropy**.#### Anglea Arshad

Explainer### What is the opposite of entropy?

Negentropy is reverse

**entropy**. It means things becoming more in order. By 'order' is meant organisation, structure and function: the**opposite**of randomness or chaos. One example of negentropy is a star system such as the Solar System. The**opposite of entropy**is negentropy.#### Eliceo Place

Explainer### Can entropy decrease in a closed system?

In a

**closed system**, available energy**can**never increase, so (because energy is conserved) its complement,**entropy**,**can**never**decrease**. A familiar demonstration of the second law is the flow of heat from hot things to cold, and never vice-versa. During this process, the**entropy**of the**system**increases.#### Benita Jury

Explainer### What happens when entropy increases?

Affecting

If you **Entropy****increase**temperature, you

**increase entropy**. (1) More energy put into a system excites the molecules and the amount of random activity. (2) As a gas expands in a system,

**entropy increases**. (3) When a solid becomes a liquid, its

**entropy increases**.

#### Bala Labella

Explainer### What is the formula for entropy?

**Entropy**has the dimension of energy divided by temperature, which has a unit of joules per kelvin (J/K) in the International System of Units.

#### Thresa Meza

Explainer### What are the three laws of thermodynamics?

The

**three laws of thermodynamics**define physical quantities (temperature, energy, and entropy) that characterize**thermodynamic**systems at thermal equilibrium. Third**law of thermodynamics**: The entropy of a system approaches a constant value as the temperature approaches absolute zero.#### Madalin Cebada

Explainer### What does Second Law of Thermodynamics mean?

The First

**Law of Thermodynamics**states that energy cannot be created or destroyed; the total quantity of energy in the universe stays the same. The**Second Law of Thermodynamics**is about the quality of energy. It states that as energy is transferred or transformed, more and more of it is wasted.#### Iancu Incognito

Explainer### Why is entropy important in thermodynamics?

It is in this sense that

**entropy**is a measure of the energy in a system that cannot be used to do work. An irreversible process degrades the performance of a**thermodynamic**system, designed to do work or produce cooling, and results in**entropy**production. The**entropy**generation during a reversible process is zero.#### Bjorn Riddermann

Explainer### Does entropy mean disorder?

A measure of the unavailability of a system's energy to

**do**work; also a measure of**disorder**; the higher the**entropy**the greater the**disorder**. In thermodynamics, a parameter representing the state of**disorder**of a system at the atomic, ionic, or molecular level; the greater the**disorder**the higher the**entropy**.#### Rozalia Niramitra

Explainer### What happens when entropy is 0?

The

**entropy**of a closed system, determined relative to this zero point, is then the absolute**entropy**of that system. The**entropy**of a perfect crystal lattice as defined by Nernst's theorem is zero provided that its ground state is unique, because ln(1) =**0**.#### Haran Germano

Explainer### Is the universe entropy?

The heat death of the

**universe**, also known as the Big Chill or Big Freeze, is a conjecture on the ultimate fate of the**universe**, which suggests the**universe**would evolve to a state of no thermodynamic free energy and would therefore be unable to sustain processes that increase**entropy**.#### Michael Shalyugin

Explainer### Why Does entropy increase with time?

**Entropy**(arrow of

**time**) As one goes "forward" in

**time**, the second law of thermodynamics says, the

**entropy**of an isolated system can

**increase**, but not

**decrease**. Hence, from one perspective,

**entropy**measurement is a way of distinguishing the past from the future.

#### Mirella Nymeyer

Explainer### What is entropy in simple terms?

The

**entropy**of an object is a measure of the amount of energy which is unavailable to do work.**Entropy**is also a measure of the number of possible arrangements the atoms in a system can have. In this sense,**entropy**is a measure of uncertainty or randomness.#### Azdin Jegunov

Explainer### How much entropy is in the universe?

At the moment of the Big Bang, almost all of the

**entropy**was due to radiation, and the total**entropy**of the**Universe**was S = 1088kB.#### Ahmadou Pannell

Explainer### Who came up with the second law of thermodynamics?

Around 1850 Rudolf Clausius and William Thomson (Kelvin) stated both the First

**Law**- that total energy is conserved - and the**Second Law of Thermodynamics**. The**Second Law**was originally formulated in terms of the fact that heat does not spontaneously flow from a colder body to a hotter.#### Fattah Mbathie

Explainer### Why is entropy a state function?

**State functions**do not depend on the path by which the system arrived at its present

**state**. For example, internal energy, enthalpy, and

**entropy**are

**state**quantities because they describe quantitatively an equilibrium

**state**of a thermodynamic system, irrespective of how the system arrived in that

**state**.

#### Janan Lory

Explainer### Why do we need the second law of thermodynamics?

The

**second law of thermodynamics**states that the total entropy of an isolated system can never decrease over time. In all processes that occur, including spontaneous processes, the total entropy of the system and its surroundings increases and the process is irreversible in the**thermodynamic**sense.#### Capitolina Rechena

Explainer### Is the universe a closed system?

**Closed systems**cannot exchange matter with the surroundings, but can exchange energy. Isolated

**systems**can exchange neither matter nor energy with their surroundings, and as such are only theoretical and do not exist in reality (except, possibly, the entire

**universe**).

#### Weifeng Kuiper

Explainer### Is an increase in entropy of a system sufficient to make a process spontaneous?

The second law of thermodynamics states that a

**process**involving an isolated**system**will be**spontaneous**if the**entropy**of the**system increases**over time. In many**processes**, the**increase in entropy**of the surroundings is accomplished via heat transfer from the**system**to the surroundings (i.e. an exothermic**process**).#### Eduvijis Lotazilla

Explainer### What does Entropic mean?

In physics, an

**entropic**force acting in a system is an emergent phenomenon resulting from the entire system's statistical tendency to increase its entropy, rather than from a particular underlying force on the atomic scale. The**entropic**force can be considered as an emergent of the**entropic**interaction.#### Raymonde Klut

Explainer### What is the opposite of enthalpy?

The

**enthalpy**of condensation (or heat of condensation) is by definition equal to the**enthalpy**of vaporization with the**opposite**sign:**enthalpy**changes of vaporization are always positive (heat is absorbed by the substance), whereas**enthalpy**changes of condensation are always negative (heat is released by the substance)#### Liceria Assinena

Explainer### What is Exergy analysis?

**Exergy analysis**is a powerful tool that allows evaluating and analyzing processes by identifying their imperfections due to thermodynamic irreversibilities.

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