Clarification Statement - S.HS.PS.1.7.CS:
Emphasis is on using mathematical ideas to communicate the proportional relationships between masses of atoms in the reactants and the products, and the translation of these relationships to the macroscopic scale using the mole as the conversion from the

Assessment Boundary - S.HS.PS.1.7.AB:
Assessment does not include complex chemical reactions.

Science and Engineering Practices - 9-12.SEP5.1:
Use mathematical representations of phenomena to support claims.

Disciplinary Core Ideas - S.HS.PS.1.7.DCI:
PS1.B: Chemical Reactions •The fact that atoms are conserved, together with knowledge of the chemical properties of the elements involved, can be used to describe and predict chemical reactions.

Crosscutting Concepts - CC5.11:
The total amount of energy and matter in closed systems is conserved.