So this shows us that metal oxides are bases, when added to water. Some non-metals can also react with oxygen in an oxidation reaction. When burnt in oxygen, the carbon in this charcoal reacts to ...

Iron is the main ingredient in various forms of iron and steel, but the various types of metals contain other elements as well. Sometimes these elements are unwanted; other times they're ...

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 ...