化学作用

例句：

1. 1.The process of oxidation is a chemical reaction.
   氧化过程是一个化学反应。
2. 2. During the combustion of gasoline, there are chemical changes occurring.
   汽油燃烧过程中会发生化学变化。
3. 3. Chemists study the properties of matter and their interactions, which involve chemical reactions.
   化学家研究物质的性质及其相互作用，这涉及化学反应。