Help your students build real understanding of counting atoms in complex through ninety questions that move from basic recognition to genuine reasoning about chemistry concepts.
The set includes questions like "What is the total number of phosphorus atoms in P₄O₁₀?", "In the formula Al₂(SO₄)₃, how many sulfur atoms are present?", and "How many total atoms are in the formula 3C₆H₁₂O₆?"
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 Reading Chemical Formulas as Atom, Writing Formulas to Represent, Subscripts and Ratios in Chemical, Formulas to Compare Substances, Classifying Substances by, and Naming Substances Using, 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.3a.
