The Atom's Family Tree
At a science fair booth called The Atom Detective Agency, Anika and Rohan learn atomic number, mass number, and isotopes — and how atoms of the same element can have different numbers of neutrons.
The Secret of the Charged Kingdom
Riya and Kabir enter Ionora, the Kingdom of Ions, with their robot guide Sparky. Through glowing castles, electron-exchange bridges, and crystal lessons, they discover how atoms become charged: lose an electron to form a cation, or gain an electron to form an anion.
Spanish version coming soon.
This story is not available in Spanish yet. You can keep reading in English, or check back soon for the Spanish PDF and quiz.
Spanish version coming soon.
This story is not available in Spanish yet. You can keep reading in English, or check back soon for the Spanish PDF and quiz.
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🔬 Science Element
An ion is a charged atom or group of atoms. A cation is a positive ion formed when an atom loses one or more electrons (example: Na → Na+). An anion is a negative ion formed when an atom gains one or more electrons (example: Cl → Cl−). Losing or gaining electrons changes the charge, but the number of protons stays the same, so the element identity does not change.
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