Gold (symbol Ag) is a chemical element which belongs to the group of transition metals. It can be found in a free state in nature as well as in compounds. Created by nature it can’t be produced in chemical or other way. Gold occurs mostly in solid state as ore made by rocks but it [...]
Mercury is the planet that is the closest in distance to the Sun in the solar system. It is difficult to view this planet since the sunlight bouncing off it makes it quite glaring. Although there were two spaceships sent out to gain more information from Mercury, not much could be found out. But soon, [...]