Chemotransmitters play an important role in the transmission of information between nerve cells.

Stoichiometry is a method for calculating the amount of substances in a chemical reaction.

No chemical flavoring is used in this ramen at all.

He always keeps in mind the phrase 'If one learns without thinking, it is a waste.'

Amiko is my best friend.

Akami is my best friend.

Juria is my best friend.

Nitrous oxide, also known as laughing gas, is used for anesthesia.

In this chemical reaction, phosphite is produced.

He said he wanted to go to America.