So.... I actually..... Never focus on that subject.

When I finally decide to focus what my chemistry teacher teach-

I don't understand a sh**

Ahaha..... I really need to read my textbook from the beginning.

Apparently, those are formula of some chemical. Like water, it's formula is H2O.

*sigh* I really need to remember those formula....

My brain is hurting thinking about this ಥ‿ಥ