This readers theater based on the book by Agnieszka Biskup explains chemical reactions as part of a physical science unit. Information covered include molecules, atoms, elements, and physical vs. chemical changes. I have used it as a whole class language arts/science activity by numbering each line. My students all have numbers so it is easy for them to see what part they have to say. Each line is short as to keep the reading moving. The script can be adapted for any number of students by editing the numbers next to each line. I have used this readers theater as an introduction to a unit as well as a final review before a test.