Difference between revisions of "HS-PS1-12"
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Revision as of 15:52, 25 October 2026
Use evidence to illustrate that some chemical reactions involve the transfer of electrons as an energy conversion occurs within a system.
Clarification statement: Evidence could include half-reactions, net ionic equations, and electrochemical cells to illustrate the mechanism of electron transfer.
Assessment boundary: Assessment is limited to completing and/or balancing oxidation and reduction half-reactions. Energy conversions are limited to qualitative statements
Note: this is a NYSED-specific performance expectation that is different from the Next Generation Science Standards.
Reference Tables
Relevant reference tables:
Regents Exam Questions
Released New York State Regents exam questions that assess HS-PS1-12 are listed here by exam and question cluster. Each link opens the question with its answer key.
Vocabulary
Terms from the Chemistry Glossary that come from this standard or from the released exam questions that assess it.
- balancing
- chemical reaction
- claim
- closed system
- component (of a system)
- electrochemical cell
- electron
- electron transfer
- energy
- energy conversion
- evidence
- half-reaction
- matter
- matter flow
- net ionic equation
- oxidation
- oxidation half-reaction
- oxidation-reduction reaction
- power
- qualitative
- reaction
- reasoning
- reduction
- reduction half-reaction
- system
- anode – June 2026, Sample 2025
- cathode – June 2026
- electrode – June 2026
- electrolysis – June 2026
- electrolyte – June 2026
- electrolytic cell – June 2026
- Hall-Heroult process – June 2026
- ion – Aug 2026, June 2026
- lithium ion battery – Sample 2025
- metal – Aug 2026
- molecule – June 2026
- overall reaction – Sample 2025
- oxidation number – June 2026
- oxidation state – Sample 2025
- oxide – June 2026
- product – June 2026
- validity – June 2026
- voltaic cell – implied by "electrochemical cells"
Performance Level Descriptions
Every Regents exam question on HS-PS1-12 is written to match one of the performance level descriptions (PLDs) below.
Resources
Examples and discussion of resources for the learning, teaching, and assessment of HS-PS1-12.
This section could be expanded upon. You can help out by adding to this section.
NGSS Dimensions
Performance expectation HS-PS1-12 was developed using the following elements from the NRC document A Framework for K-12 Science Education:
- Engaging in Argument from Evidence
- Evaluate the claims, evidence, and reasoning behind currently accepted explanations or solutions to determine the merits of arguments.
- PS1.B: Chemical Reactions
- (NYSED) Oxidation-reduction reactions are the prevailing source of power for many of today's modern conveniences.
- Energy and Matter
- The total amount of energy and matter in closed systems is conserved.
- Changes of energy and matter in a system can be described in terms of energy and matter flows into, out of, and within that system