anyagváltozásban
Anyagváltozásban refers to a state of transformation or change within a substance. This can encompass a wide range of physical and chemical processes where the composition, structure, or properties of a material are altered. In a physical change, the substance itself remains the same, but its form or appearance is modified. Examples include melting ice into water, boiling water into steam, or dissolving salt in water. The chemical identity of the substance is preserved in these instances, and the change is often reversible.
Chemical changes, on the other hand, involve the formation of new substances with different chemical properties.