|Address||<p>P.O. Box 219 Batavia, IL 60510</p>|
Item #: AP6955
This item can only be shipped to schools, museums and science centers
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MS-PS1-5: 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.
HS-PS1-7: Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction.