Assessments for 7.1 Chemical Reactions OSE unit (Bath Bomb Unit)

Gather and make sense of information to describe that synthetic materials come from natural resources and impact society. Emphasis is on natural resources that undergo a chemical process to form the synthetic material. Examples of new materials could include new medicine, foods, and alternative fuels. Assessment is limited to qualitative information.

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. Emphasis is on law of conservation of matter and on physical models or drawings, including digital forms, that represent atoms. Assessment does not include the use of atomic masses, balancing symbolic equations, or intermolecular forces.

Develop models to describe the atomic composition of simple molecules and extended structures. 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 does not include valence electrons and bonding energy, discussing the ionic nature of subunits of complex structures, or a complete depiction of all individual atoms in a complex molecule or extended structure.