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Gather and evaluate information from multiple sources to describe that synthetic materials come from natural resources and impact society. 

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Construct, test and modify a device that either releases or absorbs thermal energy by chemical processes.

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Construct an explanation based on evidence and scientific principles of a common phenomenon that can be explained by the motions of molecules.

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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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Develop models to describe the atomic composition of simple molecules and crystals.

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Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.

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Plan and conduct  an investigation of changes in pure substances when thermal energy is added  or removed and relate those changes to particle motion.

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Ask questions about locations of common elements on the periodic table to note patterns in the properties of similarly grouped elements.