Stoichiometry involves calculations of the quantities of reactants and products in a chemical reaction. The NGSS focus on the deep understanding of core ideas, and stoichiometry can be integrated in instruction when building towards performance expectations that address chemical reactions and conservation of atoms during chemical reactions.

Many vocabulary words do not explicitly appear in the standards, because the NGSS focus on a deep understanding of the concept behind a vocabulary word. Vocabulary can be introduced and applied, as needed, for instructional purposes.


Disciplinary Core Idea
PS1A: Structure and Properties of Matter
PS1B: Chemical Reactions
High School (9-12)