There are lots of different substances but only just over a hundred elements. An element is a substance that is made up of only one kind of atom. The atoms in a particular element are the same as each ...

Elements and Compounds: Understanding elements and compounds is basic knowledge to study chemistry. Elements are the basic building blocks of matter, while compounds are substances formed when two or ...

The performance gap between compound bows and new crossbows seems to be widening exponentially. In the last few years of crossbow testing, we reviewed bows — the Ravin R500, Tenpoint Nitro 505, and ...