CHEMISTRY

 Reviewed by GL

 =Optional assignment = According to [|www.unwater.org] this year the water day was celebrated on 22nd of March. This day is to call attention to the waters that cross borders and links as together. ** Water **** ( ****dihydrogen monoxide ****, ****hydrogen hydroxide **** , ****hydrogen oxide **** , ****hydronium **** hydroxide **** , ****hydroxilic ****acid **** , or ****hydroxic acid **** ) ** ( H2O , H OH ) can be separated into 3 groups solid, liquid, and gas. Water is a tasteless, odorless and colorless.  [|www.wikipedia.com] [|www.unwater.org]