化か合ごう

noun, noun or participle which takes 'suru', intransitive verb

chemical combination; combine chemically

Chemistry term for two or more substances combining to form a new compound. Used as a noun or with する as an intransitive verb.

• 水すい素そと酸さん素そが化か合ごうして水みずになる。

  Hydrogen and oxygen combine chemically to form water.

• 化か