Watch this video to find out more information on the periodic ... Mrs Roberts: Well, the modern periodic table shows us all of the elements arranged in rows, which are called periods.

organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic number. Scientists use the periodic table to quickly refer to information ...

Can France claim the first periodic table ... of all of the known elements, showing that similar elements appear at periodic atom weights. The vis tellurique from De Chancourtois’s original ...

This collection of links explores the history of alchemy, the connection of alchemy to modern ... the online periodic table, ptable.com, to investigate a number of chemistry concepts. Students will ...