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.


Disciplinary Core Ideas
PS1.B: Chemical Reactions

Crosscutting Concepts
Energy and Matter



Assessments


Phenomena

 

Anchor Charts


Video


Vocabulary

Chemical reaction
Balanced chemical equation
Reactants and products
Atoms (or molecules or ions)
Moles
Mass
Conservation of mass
Atomic scale
Macroscopic scale
Matter

Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction. (Energy and Matter)


Resources


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