Mrs Roberts: Well, the modern periodic table shows us all of the elements arranged in rows, which are called periods. It has changed a lot over the years as we've learned more and more about atoms.

In this edition of Celebrating Chemistry, explore atoms and the periodic table, go on an element scavenger hunt around ... Celebrating Chemistry is designed to engage and educate children (Grades 4-6) ...

As part of the ChemClub's 10 th Anniversary, we asked clubs to create elements of the periodic table featuring a mole. The Period Table of Endangered Elements presents elements facing supply ...