Articles about game
This article discusses the chess endgame and recommends books to improve a players endgame skill.
Elements are the basic components of matter. They weren't compounds that could be broken down further. Sort of like prime numbers in math. Robert Boyle discovered this in 1661. The concept of elements went back to Plato and Aristotle, but modern discovery began in the 1700s. The elements properties became known, and it was clear that chemists needed a method to arrange and classify them. The search for the periodic table began.