Co-Authored By:

**Entropy**

**entropy**. (1) More

**energy**put into a system excitesthe molecules and the amount of random activity. (2) As a gasexpands in a system,

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

**entropy**increases.

Correspondingly, does higher entropy mean more energy?

**Entropy is** a measure of randomness or disorder ina system. Gases have **higher entropy** than liquids, andliquids have **higher entropy** than solids. Scientists refer tothe measure of randomness or disorder within a system as**entropy**. **High entropy means high** disorder and low**energy** (Figure 1).

**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; thegreater the

**disorder**the higher the

**entropy**.

Similarly, what is entropy of a system?

**Entropy**, the measure of a **system's** thermalenergy per unit temperature that is unavailable for doing usefulwork. Because work is obtained from ordered molecular motion, theamount of **entropy** is also a measure of the moleculardisorder, or randomness, of a **system**.

Keep in mind that **entropy** increases with**temperature**. However, at higher temperatures, a certainamount of heat added to the system causes a smaller change in**entropy** than the same amount of heat at a lower**temperature**. The formula is ΔS=QT. The change in**entropy** is **related** to heat.