MS-PS1-1: Atomic Composition Model
Develop models to describe the atomic composition of simple molecules and extended structures. (Scale, Proportion, and Quantity)
Clarification Statement: Emphasis is on developing models of molecules that vary in complexity. Examples of simple molecules could include ammonia and methanol. Examples of extended structures could include sodium chloride or diamonds. Examples of molecular-level models could include drawings, 3D ball and stick structures, or computer representations showing different molecules with different types of atoms.
Assessment Boundary: Assessment does not include valence electrons and bonding energy, discussing the ionic nature of subunits of complex structures, or a complete description of all individual atoms in a complex molecule or extended structure is not required.
The following assessments were created by science teachers hoping to better understand the NGSS. In most cases teachers went from standard to assessment in around an hour. These are drafts and should be used accordingly. Feel free to improve these assessments or contribute to the collection. Learn more about assessment design here.
Bulk substances (e.g. solids, liquids, and gases at the macroscopic level)
Molecule (e.g. ammonia, methanol)
Extended Structure (e.g. sodium chloride, diamonds)
Scale, Proportion, and Quantity
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