HS-PS1-7: Conservation of Atoms in Chemical Reactions
Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction.
Clarification Statement: 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 atomic to the macroscopic scale. Emphasis is on assessing students’ use of mathematical thinking and not on memorization and rote application of problem-solving techniques
Assessment Boundary: Assessment does not include complex chemical reactions.
Balanced chemical equation
Reactants and products
Atoms (or molecules or ions)
Conservation of mass
Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction. (Energy and Matter)
*Next Generation Science Standards is a registered trademark of Achieve. Neither Achieve nor the lead states and partners that developed the Next Generation Science Standards were involved in the production of this product, and do not endorse it. Visit the official NGSS website.