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Turn your chemistry notes into a Khan Academy-style practice quiz

Upload a PDF, slide deck or photo of a textbook page and get practice questions with explanations. No credit card needed to start.

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How to build a chemistry quiz from Khan Academy lessons

Stoichiometry, bonding and gas laws stick better when you are tested on them soon after reading. If you have been watching Khan Academy chemistry videos or copying notes from class, DeckOwl can turn that material into a Khan Academy chemistry quiz you can take on your own schedule. Upload the PDF, slides or notes and choose the question types you want.

Quizzes generated from your own chemistry notes, slides or textbook pages
Multiple choice, true/false and short answer questions with explanations
Study in the browser on the free plan, with no exports
Export to PDF or DOCX on Plus, and QTI 2.1 or Moodle XML on Pro

Example Khan Academy-style chemistry quiz questions

What does Avogadro's number represent?6.022 × 10^23 particles per mole. One mole of carbon-12 has a mass of 12 grams and contains this many atoms.

Why does ionic bonding form between sodium and chlorine?Sodium gives up one electron and chlorine accepts it, so both reach stable octets and the oppositely charged ions attract.

True or false: adding a catalyst changes the equilibrium position of a reaction.False. A catalyst speeds up the forward and reverse reactions equally, so the equilibrium position stays the same.

What does Boyle's law state?At constant temperature, the pressure of a fixed amount of gas is inversely proportional to its volume.

What is the balanced equation for hydrogen burning in oxygen to form water?2H2 + O2 → 2H2O. Two oxygen atoms on the product side need two water molecules, which require four hydrogen atoms, so two H2 molecules are needed.

Generate the full set

Multiple choice, true/false and short answer

Pick the question types that fit the topic. Stoichiometry suits multiple choice, while bonding concepts work well as short answer.

Explanations for every answer

Each question includes a short explanation, so a wrong answer about limiting reagents shows you why the other options fail.

Built from your own material

Upload lecture slides, class notes or a PDF of a chapter. Questions are generated from what you give it, not from a fixed bank.

How it works

Upload your chemistry material

Add a PDF, DOCX, PPTX, plain text notes or a photo of a page. Photos are read with text recognition.

Choose the question types

Select multiple choice, true/false or short answer. Each generated question comes with an explanation.

Study the quiz in your browser

Work through the questions and review the explanations for anything you missed.

Each question includes an explanation, so you learn from wrong answers as well as right ones. The free plan includes 3 generations per month and studying in the browser. Plus at $39/year or $7.99/month adds unlimited generations and PDF or DOCX export, and Pro adds QTI 2.1 and Moodle XML export for teachers who run quizzes in a learning system.

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Frequently asked questions

How many practice questions should I do per chemistry topic?

Start with a short quiz on one topic, then review every explanation, including the ones you got right. Come back to the same topic after a day or two to check what you remember.

What chemistry topics work best for quizzes?

Topics with clear rules and definitions, such as balancing equations, ionic bonding, mole calculations and gas laws, produce the most useful questions. Conceptual topics also work well with short answer questions.

Is there a free plan?

Yes. The free plan includes 3 generations per month and lets you study in the browser. No credit card is needed to start.

Can I export my quiz?

PDF and DOCX export are included in Plus, and QTI 2.1 and Moodle XML export are included in Pro. Studying in the browser is available on the free plan.

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Keep exploring the topic

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