2 books · Ages 6–10 · Chapter Books
Spectacular Science is a 2-book series for ages 6–10 by Jess Wade. Each book stands alone — start anywhere.
Start anywhere — each book stands alone.
That said, Light: The Extraordinary Energy That Illuminates Our World and Nano: The Spectacular Science of the Very (Very) Small are great first picks.
No particular order needed — browse and pick what catches your eye.