That's a new thing, isn't it?

He created a new story.

There are many things placed in my room.

There are a lot of old furniture in the storage room.

This reaction occurs through a chemical process.

He is an excellent chemist who made many discoveries.

He is an expert in petrochemistry.

It's difficult to decipher this chemical equation.

Understanding chemical equations is difficult.

He is an expert in chemical analysis.