Eric Walker added Alkaline earth metal - Wikipedia to Alkaline earth metals

Eric Walker added Magnesium and Alkaline earth metal - Wikipedia to Alkaline earth metals, and added Alkaline earth metals to Metals

Eric Walker added a number of topics and a number of links to Magnesium, and added Magnesium to Alkaline earth metals and Chemical elements

Eric Walker added a number of topics and a number of links to Metals, and added Metals to Atoms, molecules, chemicals, minerals, materials and compounds