$\backslash$table$[[,$What the compound is made of$,$Chemical formula,Name$],[1\mathrm{.}1,2H$ atoms and $1O$ atom,$H_{2}O,$water$],[1\mathrm{.}2,1C$ atom and $1O$ atom,,$],[1\mathrm{.}3,1C$ atom and $2O$ atoms,,ammonia$],[1\mathrm{.}4,1N$ atom and $3H$ atoms,,$],[1\mathrm{.}5,1S$ atom and $3O$ atoms,methane,$],[1\mathrm{.}6,1C$ atom and $4H$ atoms,,$]](8)2.$ Study molecules A to F: Match each molecule with one of the chemical formulae below. Only write down the number and the LETTER of the molecule: $\backslash$table$[[2\mathrm{.}1,C{H}_4$