chemical terminology

例句：

1. 1.The study of chemical reactions is essential for understanding the behavior of matter.
   研究化学反应对于理解物质的行为至关重要。
2. 2. Chemical engineers are responsible for designing and building industrial processes.
   化学工程师负责设计和建造工业过程。
3. 3. The chemical composition of a substance can reveal its properties and behavior.
   物质的化学成分可以揭示其性质和行为。