STEM PRACTICE AND EVIDENCE WORKBENCH
Apply a disclosed classroom hierarchy to supplied interaction evidence and audit pairwise stronger-force claims with boundaries.
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 disclosed rule ranks supplied hydrogen-bonding evidence above other polar evidence and polar evidence above nonpolar evidence. When both substances occupy the same tier, molar masses within five percent are treated as a tie; otherwise the larger mass receives the simple dispersion proxy. This is a heuristic, not a physical law. Supported means the learner classification matches only this stated hierarchy. Actual intermolecular attraction depends on molecular shape, polarizability, surface contact, dipole strength, functional groups, competing interactions, phase, and temperature. Treat a disagreement as a prompt to inspect structure and data rather than as a final chemical verdict.
Confirm the question, source, units, notation, response coding, model assumptions, and review threshold. Keep an unchanged copy of the original evidence.
Run the worked example, inspect every intermediate row, and compare it with a hand calculation, diagram, representation, or approved subject method.
Record the method, assumptions, units, classifications, and flagged rows. Verify the editable report independently before educational or laboratory use.
How to interpret the result
Use as a transparent first-pass comparison after molecular geometry, polarity, and hydrogen-bonding evidence have been established. It can reveal which supplied feature drove a claim. It does not predict a boiling point reliably, calculate interaction energy, infer polarity from a formula, or replace observed property data and a fuller molecular analysis.
The first fictional pair gives A the hydrogen-bonding tier while B is polar without that feature. The second gives polar A priority over nonpolar B. The nonpolar pair uses larger molar mass as a bounded dispersion proxy and selects B. In the last same-tier pair, masses differ by more than five percent, so tie is flagged.
The disclosed rule ranks supplied hydrogen-bonding evidence above other polar evidence and polar evidence above nonpolar evidence. When both substances occupy the same tier, molar masses within five percent are treated as a tie; otherwise the larger mass receives the simple dispersion proxy. This is a heuristic, not a physical law.
Supported means the learner classification matches only this stated hierarchy. Actual intermolecular attraction depends on molecular shape, polarizability, surface contact, dipole strength, functional groups, competing interactions, phase, and temperature. Treat a disagreement as a prompt to inspect structure and data rather than as a final chemical verdict.
Do not assume all molecules containing hydrogen form hydrogen bonds, infer polarity from bond polarity alone, use molar mass as the only predictor, ignore shape and polarizability, equate intermolecular forces with covalent bonds, or claim the heuristic predicts every boiling point. Compare structures and measured properties explicitly.
Learning boundary
This browser-local workbench applies only the disclosed rules. It cannot diagnose a learner, certify an experiment, or replace teacher, laboratory, and safety judgment.
Review checklist
Practical questions
No. Processing occurs in the current browser tab. Avoid personal information and retain authoritative records only in the approved school system.
No. It describes entered evidence under one disclosed rule. Review reasoning, uncertainty, access, and several evidence sources.
Treat it as an editable calculation aid. Show your own reasoning, cite required sources, and follow course and academic-integrity rules.
YOUR NIRMION
