22 slide PowerPoint science deals with the classification elements,, mixtures, solutions and more. Also deals with chemical and physical change as well as conservation of mass reaction. Shows great diagrams and concept maps as well as pictures to illustrate all these ideas. With a little revamping this could be used at the middle school level, but it's mostly designed for a high school chemistry teacher. Great for the beginning of the year.
Please consider buying my whole year high school chemistry course:HS Chemistry Course
HS Chemistry:Individual Lessons: Activities, Labs, Quizzes & Tests!