Performance expectationUse evidence to illustrate that some chemical reactions involve the transfer of electrons as an energy conversion occurs within a system.
HS-PS1-12 is unique to New York State — it does not appear in the national NGSS set for Chemistry, which is why practice material for it is so hard to find.
Evidence could include half-reactions, net ionic equations, and electrochemical cells to illustrate the mechanism of electron transfer.
Assessment is limited to completing and/or balancing oxidation and reduction half-reactions. Energy conversions are limited to qualitative statements.
Every item written to HS-PS1-12 has to assess all three dimensions together, not the content alone. This is the structural change that made older practice material stop matching the exam.
Engaging in Argument from Evidence
What a student at each level can do with HS-PS1-12. These drive how a cluster spreads difficulty across its items.
Summarised by ScienceIQ from the NYSED Performance Level Descriptions for Physical Science: Chemistry. These are our wording, not the Department’s — the official descriptions are the authority.
Identify a reaction or model component showing electron transfer.
Use evidence to demonstrate electron transfer within a system.
Use a model or information to support a claim about electron transfer.
Use evidence to illustrate electron transfer as energy conversion in a system.
Phenomenon stimulus, connected items across the required types, answer key, rubric and figures drawn deterministically from a structured spec — in the format your students will sit.