Science students often find it a bit difficult to memorize the first 20 elements of the periodic table which is a basic knowledge every chemistry student must be acquainted with. Here is an easy way to completely memorize these first 20 elements offhand for your success in chemistry. follow this link an dread more http://gulpmatrix.com/chemistry/easy-ways-to-memorize-the-first-20-elements-of-the-periodic-table-offhand/