Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction. HS-PS1-7

**Using Mathematics and Computational Thinking**

Mathematical and computational thinking in 9–12 builds on K–8 experiences and progresses to using algebraic thinking and analysis, a range of linear and nonlinear functions including trigonometric functions, exponentials and logarithms, and computational tools for statistical analysis to analyze, represent, and model data. Simple computational simulations are created and used based on mathematical models of basic assumptions.

Use mathematical representations of phenomena to support claims. (HS-PS1-7)

**
PS1.B:
Chemical Reactions
**

**Energy and Matter**

The total amount of energy and matter in closed systems is conserved. (HS-PS1-7)

**Scientific Knowledge Assumes an Order and Consistency in Natural Systems**

Science assumes the universe is a vast single system in which basic laws are consistent. (HS-PS1-7)

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