I introduce  my recommended TV drama
It is "Breaking Bad"
Have you ever seen that?
I really like this drama.
In the first story main character Walter said
"Chemistry 
It is the study of what?
Chemistry is …technically, Chemistry is the study
of matter. But I prefer to see it at the study of change Electrons.They change their energy levels.Molecules change their bonds.
Elements …They combine and change into compounds. That's all of life.
I mean, it's just…It's the constant it's the cycle
It's solution,dissolution, just over and over and
over.It's growth then decay , then transformation.
It is facinating  really."

「化学で何を学ぶのか
定義からいうと
"物質を知る学問だ"
だが、その狙いは変化を学ぶことにある
電子、電子はエネルギー準位を変化させる
分子は原子の結びつきで変化する
元素の組み合わせで物質は変化する
この世はそうして成り立っている
絶え間なく循環し結合と分離をひたすら繰り返す
成長や衰えも化学変化というわけだ
それが化学の面白さだ」