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Turn your chemistry notes into stoichiometry flashcards

Upload lecture slides, PDFs, notes or photos of worked problems and get flashcards for mole ratios, limiting reactants and percent yield.

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Drop files here or browsePDF, DOCX, PPTX, text or photos of your notes · several files with Plus

Free account · 3 sets a month · Creates flashcards in seconds

Why students turn stoichiometry into flashcards

Stoichiometry is mostly a sequence of conversions, so the fastest way to review is with chemistry stoichiometry flashcards built from your own lecture slides and worked examples.

Each card covers one conversion step, such as grams to moles or moles to grams.
Limiting reactant cards ask you to compare moles of product from each reactant.
Percent yield and empirical formula cards keep the formulas and their units together.
Cards you miss return on a spaced schedule instead of in a fixed order.

Example stoichiometry flashcards for general chemistry

What is the first step when converting grams of a reactant to grams of a product?Convert grams of the reactant to moles using its molar mass, then apply the mole ratio from the balanced equation, then convert moles of product to grams.

What is the limiting reactant?It is the reactant that runs out first and sets the maximum amount of product, found by comparing the moles of product each reactant could make.

How do you calculate percent yield?Divide the actual yield by the theoretical yield and multiply by 100, because the result shows how much of the expected product you recovered.

What is an empirical formula?It is the simplest whole-number ratio of atoms in a compound, found from mass percentages or mole ratios of each element.

What coefficient balances O2 in C3H8 + O2 → CO2 + H2O?5, because C3H8 + 5O2 → 3CO2 + 4H2O has equal atoms of carbon, hydrogen and oxygen on both sides.

Generate the full set

Cards from your own material

Upload PDFs, DOCX or PPTX files, plain notes, or photos of worked problems. Text recognition reads the pages so the cards match your course.

Spaced repetition

Cards you miss come back sooner, and cards you know fade into longer gaps, so review time goes to the conversions you still mix up.

Study in the browser

The free plan lets you study in any browser. Plus adds PDF, DOCX, Anki and CSV export if you want to study on another app.

How it works

Upload your material

Add a lecture PDF, slide deck, notes file or a photo of a page with worked stoichiometry problems.

Review the generated cards

Check that each card has one idea, such as a mole ratio, a limiting reactant step or a percent yield formula, and edit anything that is off.

Study with spaced repetition

Review each day and let the schedule bring back the cards you find hardest.

A ready-made set can cover the general idea, but it rarely matches the notation, reaction types or problem style your instructor uses. DeckOwl works from your own material, so the cards follow your course.

The free plan includes 3 generations per month and browser study. Plus adds unlimited generations and PDF, DOCX, Anki and CSV export, and students get 40% off with a school email.

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Frequently asked questions

How should I split stoichiometry into flashcards?

Keep one idea per card and make separate cards for each conversion step, the mole ratio, the limiting reactant and percent yield. Add a few cards that ask you to set up a full problem so you practice the order of steps.

What is the fastest way to study limiting reactants?

Work one problem by hand, then find how many moles of product each reactant could form. The reactant that gives the smaller amount is limiting, so checking both numbers is a good habit to review.

Is DeckOwl free to use?

The free plan includes 3 generations per month and studying in the browser, but exports are paid. Plus costs $9.99 per month or $99.90 per year, and students get 40% off with a school email.

Can I export stoichiometry flashcards to Anki?

Yes, Anki export is included on Plus, along with PDF, DOCX and CSV export. Your cards keep their front and back text so you can study them in Anki.

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Keep exploring the topic

Review the main ideas visually or practice recalling them.