Chemical change is a change in matter where new substances are formed. The original materials are changed into different substances with new properties. This type of change occurs in processes such as burning, cooking, and rusting. Chemical changes are part of many natural and human-made processes.

Chemical changes take place in environments such as kitchens, factories, and natural settings. They involve chemical reactions between substances. These changes can produce new materials that look or behave differently from the original ones.

Chemical changes are often difficult or impossible to reverse. They have been observed throughout history in many settings. These changes are part of how materials are transformed in science and everyday life.