FWIW, atomic nuclei have fun substructure. They behave like inhomogeneous sometimes-oblate liquid drops[1] when large, and alpha-particle clusters[2] when small. I wonder if one could craft an introduction to atoms for kids, with rather more "you don't need this for the standardized exams, but here's a bunch of fun stuff you're usually not shown".
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FWIW, atomic nuclei have fun substructure. They behave like inhomogeneous sometimes-oblate liquid drops[1] when large, and alpha-particle clusters[2] when small. I wonder if one could craft an introduction to atoms for kids, with rather more "you don't need this for the standardized exams, but here's a bunch of fun stuff you're usually not shown".
[1] a plutonium fission model https://imgur.com/a/nlwzLyy [2] fig.4 on page 4 https://arxiv.org/pdf/1406.2473 Note wacky bowling-pin-shaped Neon.