The 2000s was an incredibly strong decade for heavy metal of all subgenres, new and old. Here are the 50 best albums from that beloved era.

The reactivity series is a list that shows the order of reactivity of some common metals ... Only the four most reactive metals of the reactivity series react with water. Aluminium is unusual ...

Metals are the only substances that are magnetic. But some metals are magnetic and some are not. The most common magnetic metal is iron. You don't see too many objects made of pure iron but you do see ...