This chemical reaction is very dangerous.

In this chemical reaction, the catalyst promotes activation.

This chemical reaction does not proceed without a specific catalyst.

This project aims to promote the local economy.

This project aims to promote the advancement of science and technology.

This chemical reaction is very dangerous.

This chemical reacts when heat is added.

He is majoring in chemistry at university.

He is an expert in chemistry.

This chemical reaction is accelerated by catalysis.