酸化

1. Origins, structure, and basic meaning

• Structure: 酸化 is read さんか and means oxidation, a chemical reaction affecting a substance.
• Basic usage: It is used when explaining a cut apple's color change or comparing how quickly metals react.

2. Common pitfalls and similar expressions

• Oxidation and change in general
  • 変化 broadly means change, while 酸化 names a particular kind of chemical reaction. Not every color change should automatically be called 酸化.
• Reaction and result
  • 酸化して色が変わった connects oxidation with the resulting color change.