Periodieke tabel sleutelhanger

"Periodic table", de conventie, table, science, chemistry, chem, physics, elements, element, metals, "non-metals", groups, sciency, sciencey, educational, education, geek, nerd, geeky, nerdy, colorful, rainbow, pastel, multicolor, multicolored, "science teacher", "educational resational resational" bron", "educational resources", chemist, fysicist, knowledge, student, study, scientist;