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HomeConcept libraryChemistryStoichiometry and Yield

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Follow the authored sequence, or switch to recap mode for a faster review of the same path.

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Starter track3 concepts2 checkpointsChemistry72 min

Stoichiometry and Yield

Not started

Start with one visible reaction recipe, use the lower batch cap to identify the limiting reagent, and then compare actual output with the same theoretical marker.

Use this track when chemistry quantities still feel like disconnected worksheet steps. The path keeps one particle-and-recipe bench in view so stoichiometric ratios, limiting reagent, leftover reactant, and percent yield all read as different views of the same reaction run.

Recipe batchesLimiting reagentLeftover reactantActual vs theoretical output

Entry diagnostic

Decide where to enter this path without opening a second testing system.

Reuse the stoichiometric-ratio quick test and the limiting-reagent checkpoint to decide whether to start from complete recipe batches or jump straight to the yield end of the branch.

Start from beginning0 / 2 probes ready

Check the recipe-to-yield bridge first

Start from beginning

No saved diagnostic checks are available yet, so the opening concept is still the best place to start.

Uses the same local-first quick tests, checkpoint challenges, and track history already saved in this browser.

Begin with Stoichiometric Ratios and Recipe Batches
  2. ChallengeNot started8 checks

    Limiting-reagent checkpoint

    Use the limiting-reagent challenge to verify that the lower batch cap and leftover reactant still stay tied together before you skip the opening concept.

    No saved checkpoint attempt yet.

    Limiting reagent
    Open Make B limit first

Why this order

The sequence is authored to keep the model honest.

Stoichiometric Ratios and Recipe Batches comes first because the whole branch depends on reading one complete recipe batch honestly. Limiting Reagent and Leftover Reactants then keeps the same recipe visible while the lower supply cap sets the theoretical output, and Percent Yield and Reaction Extent closes by holding that same theoretical marker steady while the actual tray lands lower.

Shared concept pages

Each step opens the same simulation-first framework.

Compare mode, prediction mode, quick test, worked examples, guided overlays, challenge mode, and read-next cues stay on the concept pages. The track only decides the guided order and the next recommended stop.

Guided path

Follow the concepts and checkpoint moments in order.

Checkpoint cards reuse the authored challenge entries already living on the concept pages.

  1. 1Not startedMastery: NewStart here

    Stoichiometric Ratios and Recipe Batches

    Keep one reaction recipe visible so stoichiometric ratios read as complete batches, not detached worksheet proportions.

    Start here before moving into Limiting Reagent and Leftover Reactants.

    Stoichiometry and YieldIntro24 min
    Start concept
  2. 2Not startedMastery: New

    Limiting Reagent and Leftover Reactants

    Use one recipe bench to see which reactant caps the output first and why the other reactant can remain in excess.

    Builds on Stoichiometric Ratios and Recipe Batches before setting up Percent Yield and Reaction Extent.

    Stoichiometry and YieldIntro24 min
    Open concept
  3. Checkpoint 1LockedNot started

    Limiting-reagent checkpoint

    Pause once the lower batch cap and the leftover tray agree on which reactant runs out first and which one stays in excess.

    Finish Limiting Reagent and Leftover Reactants first. This checkpoint ties together Recipe ratios and Limiting reagent through Make B limit first.

    Pause here after Limiting Reagent and Leftover Reactants before moving into Percent Yield and Reaction Extent.

    Recipe ratiosLimiting reagent8 checksCoreGraph-linkedGuided start
    Return to Limiting reagentOpen concept
  4. 3Not startedMastery: New

    Percent Yield and Reaction Extent

    Compare actual output with the same theoretical recipe cap so percent yield stays visual and honest on one shared bench.

    Capstone step after Limiting Reagent and Leftover Reactants.

    Stoichiometry and YieldIntro24 min
    Open concept
  5. Checkpoint 2LockedNot started

    Percent-yield checkpoint

    Finish by keeping the same matched recipe while the actual tray lands below the theoretical marker, so yield reads as a visible shortfall instead of a detached percentage.

    Finish Percent Yield and Reaction Extent first. This checkpoint ties together Recipe ratios, Limiting reagent, and Percent yield through Hit 75% yield on a matched run.

    Final checkpoint that closes the authored track after Percent Yield and Reaction Extent.

    Recipe ratiosLimiting reagentPercent yield8 checksCoreGraph-linkedGuided start
    Return to Percent yieldOpen concept