Metals: From Shiny Rocks to Superpowers
Like Duolingo, but for Metals: From Shiny Rocks to Superpowers. 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.
Free during early access · No credit card · iPhone & Android

Key ideas in Metals: From Shiny Rocks to Superpowers
- Metals are defined by luster, conductivity, and malleability
- Non-metals are typically brittle or gaseous
- Metals occupy the left and center of the table
- Non-metals (gases) are clustered on the far right
- Surface oxidation can hide metallic luster
- Malleability is a more definitive test than hardness
- Electrical conductivity is the final 'club' requirement
- Locating metals versus non-metals (gases) on the periodic table
- Metallic bonding involves delocalized electrons
- Loose electrons are the reason for conductivity and flexibility
- Proving a material is a metal through a sequence of physical tests
- Understanding the 'why' behind metal behavior (electron sharing)
- Conductivity allows energy flow
- Malleability allows shaping without breaking
- Luster is the ability to reflect light
- Matching the physical property to the practical 'real world' result
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives Metals: From Shiny Rocks to Superpowers 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.
Here's what playing it feels like
A real question from this course. Take your best guess.
What usually happens if you try to hammer a solid non-metal into a new shape?
Get it right to open this lesson and 65 more in the app.
Where Metals: From Shiny Rocks to Superpowers takes you
Discover why some metals explode in water while others stay shiny for centuries. Learn to spot the difference between a soda can and a spaceship wing without ever touching a calculator.
- 1
Spotting Metals in the Wild
- What makes a metal a metal?
- Why they feel cold and look shiny
- Bending without breaking
- The heat and spark test
- 2
The Danger Zone: Metals That React
- Alkali metals: The water-exploders
- Why you can't find pure sodium in nature
- Alkaline earths: The firework makers
- Calcium: More than just bone strength
- Magnesium: The blinding white light
- How to keep reactive metals safe
- 3
The Heavy Hitters: Everyday Giants
- Transition metals: The backbone of the world
- Iron and Steel: Why they rust
- Copper, Silver, and Gold: The money metals
- 4
The Weird and Wonderful Outsiders
- Mercury: The metal that flows like water
- Aluminum: The lightweight champion
- Lead and Tin: The soft heavyweights
- Titanium: The indestructible choice
- Rare Earths: The secret inside your phone
- 5
The Secret Logic of the Table
- Why the table is shaped like a castle
- The 'Staircase' that divides the world
- How electrons decide who explodes
- Predicting a metal's personality
5 sections · 22 units · 66 levels. Built to play, not to enroll.
You pick the voice
Metals: From Shiny Rocks to Superpowers is taught in the Explain Like I'm 5 style: no big words. promise.. 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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Start Metals: From Shiny Rocks to Superpowers today.
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