Radium (Ra) Block- Chemistry
by oldifluff - uploaded on March 17, 2016, 9:01 pm
Today some blocks for the chemical element symbols, (from the previous festoon) that can contribute letters for the word Chemistry.
I used Carbon (C), Helium (He), Manganese (Mn), Iodine (I), Sulfur (S), Tellurium (Te), Radium (Ra) and Ytterbium (Yb). :-)