Make it easy! TRUE Box Chemistry bundle units 1-4 were written by a master educator! There are 4 units of instruction, consumables, planning, activities, and answer keys in this bundle! We made it easy!!TRUE Box makes it easy....Purchase, review, supplement or not, download and teach! UNIT 1:In this first box you will be introduced to theproperties and changes of matter, the Periodic Table, Scientific Method, scientificmeasurements, Atomic Theory, structure of the atom, and distinguishing amo