Nakamura Chemical Symbol Disks

A set of symbol disks designed to draw student interest in chemical formulas. The teacher can use the symbol disks to explain the meaning of molecular formulas on the blackboard. A set of 11 kinds of disks, 46 disks in total, are housed in a resin case.



CHART IS SET UP WITH THE FOLLOWING CATAGORIES:
SYMBOL, COLOR, DIAMETER(mm) NUMBER OF DISKS
*H Blue 95 12
*Cl Green 95 4 *O Lavender 95 2
*N Brown 95 2 *C Black 95 2
*Cu Orange 95 4
*Na Red 95 4
*Blank Gray 115 2
*Blank Gray 95 4
*Electric Charge (+) Red 33 4
*Electric Charge (-) Blue 33 4


FEATURES:
*Symbol disks are brightly color coded
*Made of rubber with imbedded magnets.