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A graphic featuring an orange diagram of concentric circles, a black rock, a stylized sun, and yellow crystals.

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The Periodic Table

ZapStacks

7

Zaps

145

Hydrogen fuels the stars while carbon builds your bones. You know the essentials, but can you distinguish phosphorus from sulfur under pressure? Nitrogen is everywhere, yet it hides in plain sight. Stop guessing and prove you can handle the elements that hold life together.

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ZapStacks

Flat illustration of a cracked crystal, a circuit board, and an hourglass in orange and tan tones on a gray background
Silicon
20 Zaps · Medium
Flat illustration of a lit match, orange crystals, a molecular model, and a laboratory flask on a gray background
Phosphorus
20 Zaps · Medium
A central circle containing a cluster of orange and black spheres is surrounded by a honeycomb pattern, a faceted diamond, and a dark, irregular rock.
Carbon
25 Zaps · Easy
A stylized atom, a sun, and a laboratory flask containing orange liquid.
Hydrogen
20 Zaps · Medium
Gas cylinders, an atom model, and a laboratory flask containing nitrogen molecules.
Nitrogen
20 Zaps · Medium
An orange oxygen tank labeled O2, a scuba mask, and an atomic model surrounded by bubbles.
Oxygen
20 Zaps · Easy
A cluster of orange crystals with a burnt match, an unlit match, and a black atom symbol.
Sulfur
20 Zaps · Hard

More ZapCores in The Periodic Table

A person in a thinking pose surrounded by scientific icons including an atom, a molecular structure, and laboratory glassware.
A test tube with orange liquid, a molecular model, purple crystals, and an Erlenmeyer flask.
A vacuum tube, an Erlenmeyer flask with orange liquid, an atom model, and a balloon.
A baseball bat, an atomic model, a crystal, stacked bowls, dark blocks, and a flask with liquid.