Powtoon

The above example discusses the property of electronegativity and how it trends on the periodic table. The idea is to use it as a teaser or ice-breaker for the lesson. Electronegativity plays an important role and affects a myriad of other properties including its solubility, melting/boiling points, what intermolecular forces a molecule experience, and more.

PowToon was helpful in creating this primer. The learning curve is not steep and I got the hang of making transitions and animations within an hour of using it. There are several transitions, images, and backgrounds that are free and available, but a paid version does open a lot more options.

The interface is simple enough that this would be useful for assignments. One could have their students create an animation covering a topic without being bogged down as one would with a professional editor. Powtoon is useful for both lesson content and as assignments.

If used as an assignment, then developing a rubric would probably be best for assessing the student's work.