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How Matter Works: The Foundations of Chemistry course icon

How Matter Works: The Foundations of Chemistry

Like Duolingo, but for How Matter Works: The Foundations of Chemistry. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.

For the part of you with thirty open tabs that never became anything.

45 bite-size levelsAbout 5 minutes each

Free forever · No credit card · iPhone & Android

Cali the Catalyst
How Matter Works: The Foundations of Chemistry
with Cali the Catalyst
45
Levels
6
Sections
5
Min/day
What you'll learn

Key ideas in How Matter Works: The Foundations of Chemistry

  • Physical changes like dissolving or melting don't create new substances
  • Unexpected bubbling indicates a gas is being produced by a reaction
  • Chemical changes result in a substance with different properties, like sugar turning into carbon
  • A sudden, permanent color change suggests a new molecule has formed
  • Reversibility is often a clue for physical changes
  • Mixing two liquids to see them turn cloudy or change color is a sign of rearrangement
  • Distinguishing between physical and chemical changes based on substance identity
  • Identifying visual signals of a chemical reaction
  • Chemical reactions can release stored energy as heat (exothermic)
  • Atoms are rearranged but never lost during a reaction
  • Temperature changes without a stove or ice bath indicate bonds are breaking or forming
  • The total mass of the products must equal the total mass of the reactants
  • Energy absorption can make a mixture feel cold
  • Gases produced in a reaction still have mass even if they are invisible
  • A precipitate is a solid that emerges from a liquid chemical reaction
  • Cloudiness in a previously clear mixture is the visual cue for solid formation
Why not just Google it

You've tried the other tabs

Wikipedia

Thirty open tabs. Four facts you actually kept.

YouTube

You watched. You nodded. By Sunday it was gone.

ChatGPT

One answer, then back to scrolling.

Online courses

Eight weeks. You meant to finish. You didn't.

Tomo gives How Matter Works: The Foundations of Chemistry the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.

Try a question

Here's what playing it feels like

A real question from this course. Take your best guess.

Signs of a New Substance

You drop a tablet into room-temperature water and it begins to bubble. What does this unexpected bubbling suggest?

Get it right to open this lesson and 44 more in the app.

Course map

Where How Matter Works: The Foundations of Chemistry takes you

Discover the hidden logic of the physical world, from the dance of subatomic particles to the explosive energy of chemical reactions.

  1. 1

    Seeing Like a Chemist

    • Spotting Chemical Change
    • Sorting the World's Ingredients
  2. 2

    The Building Blocks

    • The Anatomy of an Atom
    • Decoding the Periodic Table
  3. 3

    The Social Life of Atoms

    • The Tug-of-War: Ionic Bonding
    • Sharing the Load: Covalent Bonding
    • The Architecture of Molecules
  4. 4

    The Language of Reactions

    • Counting by Weighing: The Mole
    • Balancing the Chemical Equation
    • Reaction Math: Stoichiometry
  5. 5

    States and Solutions

    • The Kinetic Nature of Matter
    • The Science of Dissolving
    • Acids, Bases, and pH
  6. 6

    The Energy of Change

    • Thermochemistry: Heat and Bonds
    • Kinetics and Equilibrium

6 sections · 15 units · 45 levels. Built to play, not to enroll.

How it's taught

You pick the voice

This course
The Professor

How Matter Works: The Foundations of Chemistry is taught in the The Professor style: clear, structured, thorough. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.

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