Clarification Statement - S.HS.PS.1.8.CS:
Emphasis is on simple qualitative models, such as pictures or diagrams, and on the scale of energy released in nuclear processes relative to other kinds of transformations.

Assessment Boundary - S.HS.PS.1.8.AB:
Assessment does not include quantitative calculation of energy released. Assessment is limited to alpha, beta, and gamma radioactive decays.

Science and Engineering Practices - 9-12.SEP2.1:
Develop a model based on evidence to illustrate the relationships between systems or between components of a system.

Disciplinary Core Ideas - S.HS.PS.1.8.DCI:
PS1.C: Nuclear Processes •Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process.

Crosscutting Concepts - CC5.10:
In nuclear processes, atoms are not conserved, but the total number of protons plus neutrons is conserved.