STEM REASONING AND EVIDENCE WORKBENCH
Sum supplied bond-dipole vector components by species and audit molecular-polarity claims from the resultant.
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
For each species, add all signed x components and all signed y components. Resultant magnitude equals the square root of total x squared plus total y squared. A resultant above the declared near-zero tolerance is classified polar in this model; a resultant at or below it is classified nonpolar by cancellation. A supported claim agrees with the entered vector and tolerance evidence. The result remains conditional on correct geometry, equivalent bond directions, and component values. A nonzero resultant indicates charge-separation direction in the model but does not provide a measured molecular dipole or determine bulk behavior by itself.
Confirm the question, approved source, units, notation, signs, response coding, model assumptions, and review threshold. Keep an unchanged copy of measurements or learner evidence.
Run the worked example, inspect every intermediate row, and compare the result with a hand calculation, diagram, representation, periodic table, or approved laboratory method.
Record the method, assumptions, uncertainty, units, classifications, and flagged rows. Verify the editable report independently before instruction, assessment, or laboratory use.
How to interpret the result
Use after bond polarity and molecular geometry have already been established and learners need to test vector cancellation. It does not infer bonds, electronegativity, VSEPR shape, three-dimensional components, resonance, conformation, experimental dipole moment, solubility, or intermolecular-force strength.
Two opposite carbon dioxide components cancel, two water components retain a vertical resultant, and three ideal trigonal-planar boron trifluoride components cancel within tolerance. A supplied ammonia resultant points upward, so the entered nonpolar claim conflicts with the nonzero vector evidence.
For each species, add all signed x components and all signed y components. Resultant magnitude equals the square root of total x squared plus total y squared. A resultant above the declared near-zero tolerance is classified polar in this model; a resultant at or below it is classified nonpolar by cancellation.
A supported claim agrees with the entered vector and tolerance evidence. The result remains conditional on correct geometry, equivalent bond directions, and component values. A nonzero resultant indicates charge-separation direction in the model but does not provide a measured molecular dipole or determine bulk behavior by itself.
Do not label every molecule with polar bonds as polar, add magnitudes without directions, draw a flat shape when geometry is three-dimensional, ignore lone-pair effects, or infer solubility from one label. Verify the Lewis structure and geometry, choose axes, resolve every bond vector, and inspect symmetry before summing.
Learning boundary
This browser-local workbench applies only the disclosed rules. It cannot diagnose a learner, certify an experiment, establish a chemical structure, 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 school-approved system.
No. It describes entered evidence under one disclosed rule. Compare several evidence sources and ask for reasoning before drawing a conclusion.
Treat it as an editable calculation aid. Show your own reasoning, cite required sources, and follow the course method and academic-integrity rules.
YOUR NIRMION
