STEM EVIDENCE WORKBENCH
Compare learner compound names with supplied verified names across ionic, transition-metal, molecular, acid, and hydrate conventions.
Review output
Load the worked example to inspect realistic inputs, or enter anonymous classroom or laboratory evidence. Results remain in this browser tab until you copy or download them.
Transparent method
The verified and learner names are lowercased, Unicode-normalized, stripped of repeated whitespace, and compared after ordinary hyphens become spaces. No chemical tokens are invented or removed. A transition-metal response without parentheses receives a bounded oxidation-state cue; other class-specific messages direct review without generating an answer. A match supports the written naming response under the supplied convention. A flag identifies a likely area such as oxidation state, molecular prefix, acid ending, or hydrate prefix. Confirm the actual error by asking the learner to identify ions, charges, atom counts, or water count and then apply the curriculum naming sequence.
Confirm the prompt, source values, units, signs, notation, precision, and model required by the current course. Keep an untouched copy of observations or responses before changing a row.
Run the worked example first, inspect every intermediate row, and compare the table with a hand calculation, diagram, graph, periodic table, or approved laboratory method.
Record the method, assumptions, units, rounding, limits, and any row that needs review. Use the exported report as editable evidence and verify it independently before assessment or laboratory use.
How to interpret the result
Use after learners name compounds from formulas and need row-level evidence across several convention families. The diagnostic normalizes capitalization, whitespace, and ordinary hyphens only. It does not derive names from formulas, calculate oxidation states, verify chemical existence, choose among common names, or decide which regional convention the course requires.
Sodium chloride, dinitrogen tetroxide, and sulfuric acid match their supplied names. Iron(III) chloride entered without the oxidation-state numeral is flagged. Copper(II) sulfate pentahydrate entered without the oxidation state is also retained for review. Formula, class, verified name, response, and diagnostic remain side by side.
The verified and learner names are lowercased, Unicode-normalized, stripped of repeated whitespace, and compared after ordinary hyphens become spaces. No chemical tokens are invented or removed. A transition-metal response without parentheses receives a bounded oxidation-state cue; other class-specific messages direct review without generating an answer.
A match supports the written naming response under the supplied convention. A flag identifies a likely area such as oxidation state, molecular prefix, acid ending, or hydrate prefix. Confirm the actual error by asking the learner to identify ions, charges, atom counts, or water count and then apply the curriculum naming sequence.
Do not omit Roman numerals for variable-charge metals, use molecular prefixes for ordinary ionic compounds, drop a first-element prefix when it is required, confuse -ide, -ate, and -ite endings, ignore aqueous state for acids, or omit hydrate prefixes. Verify capitalization and source convention before recording feedback.
Learning boundary
This browser-local workbench applies only the disclosed rules to entered values. It cannot diagnose learning, certify an experiment, establish a chemical fact, reconstruct missing evidence, or replace the method and judgment required by a teacher, curriculum, laboratory, or institution.
Review checklist
Practical questions
No. Processing occurs in the current browser tab. Avoid names and other personal information, and retain authoritative records only in the system approved by the school.
No. A matched pattern describes the entered evidence under one disclosed rule. Ask for an explanation and review several evidence sources before deciding the next step.
Treat it as an editable calculation aid. Show your own reasoning, use the method requested by the course, cite required sources, and follow the applicable academic-integrity rules.
YOUR NIRMION
