Do your students need help memorizing polyatomic ions? This worksheet gradually increases the information missing from the formulas to test their memory for seven common polyatomic ions. This product would be fun as a timed activity for the whole class, partner work to quiz each other, or for an independent student who needs more practice. However it is used, knowing these ions can be a game changer for writing chemical formulas and naming compounds! This activity includes:ยท Level 1 -