In this video, I look at an essential chemistry skill, which is the ability to take a chemical formula, determine what elements are in it, as well as how many atoms of each element there are.
This video ties in nicely with a practice worksheet that I have available.
I use this video with my 7th graders, as an "at-home" refresher, or a way for them to get some extra help, so they can be more successful in class. The skill is a bit ahead of the game for their age, but they seem to grasp it just fine.
This skill is more important in high school, particularly chemistry, so it could clearly be used there as well, for a teacher refresher, long-term sub, etc.
The video is done using a Powerpoint slideshow, with step-by-step animations and explanations, as I work through problems that include:
-Elements in more than one place in a formula
The only thing I didn't include was double parentheses, which honestly...if they can figure out parentheses, the doubles aren't that much harder (work from the inside--out).
The video is just over 7 minutes long, and is in 1080p