This resource turns isotopes and average atomic mass into a complete, ready to use review for Grade 9-12 chemistry, covering the same idea from three different angles.
The set includes questions like "Which element has isotopes that differ in neutron number?", "Which isotope of carbon is the most abundant?", and "What defines an isotope of an element?"
Because the three worksheets share the same content in three different formats, you can spread them across the week: one for diagnosis, one for practice, and one for assessment, without repeating a single question.
This set is part of a standards aligned chemistry unit. The unit also covers Atomic Number, Mass Number, Why Atomic Models Changed Over, Quantum Model as a Predictive, Electron Configurations as, Valence Electrons and Chemical, and Excited Electrons and Observable, all in the same three worksheet format, so your classroom routine stays familiar while the topic changes.
Suitable for Grade 9-12 chemistry classes, and for review at any point in the school year. This set is aligned to Virginia SOL standard CH.2a.
