Performance expectationPlan and conduct an investigation to compare properties and behaviors of acids and bases.
HS-PS1-11 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.
Examples of properties could include pH values (concentration), neutralization capability and conductivity. Observations of behaviors could include the effects on indicators, reactions with other substances, and efficacy in performing titrations.
Reactions are limited to Arrhenius and Bronsted-Lowry acid-base reactions.
Every item written to HS-PS1-11 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.
Planning and Carrying Out Investigations
What a student at each level can do with HS-PS1-11. 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.
Select tools, materials, or information that identify acid/base properties.
Calculate a quantity or make a claim about acid/base behavior from provided information.
Compare acid/base properties or behavior using provided investigation results.
Plan and conduct an investigation comparing acid/base properties and behaviors.
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.