こう化学 かがく反応 はんのうじゃありませんでした
kōkagakuhannōjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 光化学反応

1. Was not a photochemical reaction.; It was not a photochemical reaction.

Past/Perfective
Negative
Polite
Terminal Form