Question

State an example of a process that occurs in nature that is as close to reversible as it can be.

a) Freezing of water
b) Boiling of water
c) Combustion
d) Rusting of iron

Answer 1

a. The freezing and subsequent melting of water is an example of a near reversible process in nature, demonstrating a reversible physical change.

Step-by-step explanation:

An example of a process that occurs in nature that is as close to reversible as it can be is a. the freezing of water. In general, physical changes, such as state changes of water, can be reversible as the process can go in both directions under the right conditions.

For instance, water can freeze to form ice at 0°C and can equally melt back to water when the temperature rises above 0°C. This reversibility is a characteristic of physical changes, which contrasts with chemical changes, which typically are not reversible.

Processes such as the rusting of iron or combustion are examples of chemical changes that are largely irreversible under normal conditions.