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A simplified activity book for chemical elements for ages 9 and above. All 118 elements are included arranged by its atomic number, it includes the following informations: Name of elements, symbol, Atomic number, Mass number, example and an activity of drawing the atomic model of the given element. This book also explains how to solve for protons, neutrons and electrons and use the number of protons, electrons and neutrons in drawing the atomic model of the elemen