ChemGemChemistry I · Start From Zero

Chemistry I · for complete beginners

Pass Chemistry I by learning which route each problem needs.

Every problem type has a short route: spot the clue, take the steps, check the units. Learn it one idea at a time, try it right away, and get feedback that explains every wrong answer.

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6C12.01

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Carbon-14 has atomic number 6. How many neutrons does it have?

  • Read the mass number
  • Subtract protons
  • The rest are neutrons

Every lesson works the same way

  1. Recognize the clue

    Each idea starts with what the question looks like, so you know which tool to reach for.

  2. Follow the route

    Two to four short steps. Worked examples reveal one step at a time so you can predict the next move.

  3. Try it and get feedback

    Type your answer and check it instantly. Hints stay hidden until you ask for them.

Ten chapters, from zero to the final

    On the web

    Interactive study

    Chapter 1, 112 tap-to-check practice questions and route flashcards are open now. Your progress saves in this browser.

    Open practice

    The book

    Chemistry I Start From Zero

    The full guide, all nine chapters plus math first, with pop-up hints and a 70-question final rehearsal. Available as two Kindle books: Concepts and Worked Examples, and the Practice Workbook.