Strong interaction is one of the four fundamental forces in particle physics.

Fundamental interaction is one of the most important forces in physics.

Gravitational interaction creates attraction between objects.

Electromagnetic interaction is one of the fundamental forces used to explain the force between substances.

Weak interaction is one of the four fundamental forces between elementary particles.

He is suffering from combat stress reaction.

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

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

No chemical flavoring is used in this ramen at all.

My company specializes in the manufacture of fine chemicals.