No other substances are generated during the wind power generation process, which is a physical change. Physical change means that although the state of the substance has changed, generally speaking, the composition of the substance itself has not changed. For example: changes in position, volume, shape, temperature, pressure, and mutual transformation between gaseous, liquid, and solid states, etc.
Definition of physical change
Concept: a change that does not produce new matter. (Physical changes are only changes in the shape and state of matter. (changed)
Essence: The smallest particle itself that maintains the chemical properties of matter remains unchanged, only the interval motion between particles changes, and no new matter is generated.
Many students confuse physical changes with chemical changes. In fact, the fundamental difference between physical changes and chemical changes is that physical changes do not produce new substances, while chemical changes do (for example, the process of copper producing patina is a chemical change )
Macro: No new substances are generated
Micro: The distance between the atoms that make up the molecule remains unchanged (the length of the chemical bond remains unchanged), the shape and size of the substance changes, and the molecule itself remains unchanged. , the combination of atoms remains unchanged.