Drawing Bohr Models (with key!) - Perfect Group & Period Trends Worksheet
Here is a nice worksheet I made for my 9th grade Physical Science classes that reviews the group and period number trends of the periodic table.
If you have taught your students OR need to teach them that the group # = the number of valence electrons in those elements' atoms, and that the period # = the total number of energy levels of the atoms, then this is the worksheet for you!
I have left a space for you to do an example with them before turning them loose on their own.
Includes a key!