3.2.6-8.E

Develop and use a model to describe how the total number of atoms does not change in a chemical reaction and thus mass is conserved.

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Crosscutting Concepts
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Standards citation: NGSS Lead States. 2013. Next Generation Science Standards: For States, By States. Washington, DC: The National Academies Press. Neither WestEd 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.