The Science of Macaroni Salad is a fun two-part TED-Ed lesson through which students can learn about chemical mixtures, solutions, and bonds The videos use macaroni salad as the context for the lessons, but the lessons could certainly be applied to many other substances. Both videos are embedded below.

Applications for Education 
Videos like The Science of Macaroni Salad interest me as introductory lessons. Videos like these put chemistry into a context that a lot of students can relate to. Start with these videos before diving deeper into the concepts that the videos introduce.