For the last few years, my chemistry students have used this hands-on activity as an outstanding Learning Tool to master writing both Ionic & Covalent dot diagrams. By using the cutout symbols, dots, dashes, and charges, students gain a solid understanding of covalent vs ionic bonds, how to satisfy the octet rule by exchanging vs sharing, and how to correctly write full electron dot diagrams for both types of bonds.
The kit includes all printables necessary to make numerous ionic and covalent dot diagrams including the 6 compounds featured in the lab worksheet. You could also add additional compounds that could be built with no additional required cutouts.
For my classes, I print each element on different color card stock, then had my 1st class cut them out. Subsequent classes have simply reused the sets. I've included a convenient "Contents" label for storage that allows each group to quickly count and make certain they have all the necessary ingredients to build all 6 compounds.
Students will work in lab groups to:
~Identify the compound as Ionic or Covalent
~Write the correct formula
~Determine the number of valence electrons of each element
~Build "Before" & "After" dot diagrams using the cutout printables
~Write/Draw the dot diagrams
Package includes editable Word Documents with:
(1) Printable atom symbols, dots, charges, and dashes
(Separated by element to print on different color card stock)
(2) 2 Page Lab worksheet that walks students through the Building & Drawing process of 6 compounds
(3) Full Answer keys including drawn dot diagrams
(4) A Contents List to label each cutout set (So you can easily reuse them year to year)
(5) A Pre-Lab page (possibly as a starter) with 2 compounds (unique to the lab worksheet compounds) for you to demonstrate the written portion of the lab