Understanding the Differences Between Chemical and Physical Changes in Science

How is a chemical change is different from physical change?

A chemical change forms a new substance; Chemical changes are not reversible under normal conditions

A chemical change is a process in which one or more substances are transformed into different substances with different chemical properties. This process involves the breaking and formation of chemical bonds between atoms or molecules. During a chemical change, the original substance(s) is/are no longer present and new substances are formed, often with a release or absorption of energy. Examples of chemical changes include combustion, rusting of iron, and the baking of a cake.

On the other hand, a physical change is a process in which a substance undergoes a change in physical appearance or state, but does not change its chemical composition. During a physical change, the original substance remains the same chemically, but its physical properties, such as size, shape, texture, or state, may be altered. Examples of physical changes include boiling or freezing water, crushing a can, and melting an ice cube.

In summary, the main differences between a chemical change and a physical change are:

– Chemical changes involve the formation of new substances with different chemical properties, while physical changes do not.
– Chemical changes involve the breaking and formation of chemical bonds, while physical changes do not.
– Chemical changes typically involve a release or absorption of energy, while physical changes may not involve a significant change in energy.

More Answers: