Elements 1-15 of the Periodic Table Helping students learn the chemical formula of the first 15 elements of the Periodic Table. Simple drag and drop exercise. Drag Chemical Symbols to their names Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminum Silicon Phosphorus H He Li Be B C N O F Ne Na Mg Al Si P