The periodic table is one of the triumphs of science. Even before certain elements had been discovered, this chart could successfully predict their masses, densities, how they would link up with other ...

Growing kids tend to repeat all sorts of colorful language heard while at school, yet there's one particular C-word that causes some parents to feel a special type of dread. Chemistry. A new teaching ...

The formula is H 2 O so the dot and cross diagram includes two H atoms and one O atom. H has 1 outer electron. O has 6 outer electrons. The H circles must each overlap the O circle. Nitrogen molecules ...