Searching in the Bookfinder under “Subject” with “Chemistry” for the key word turns up only eight items, so you could easily look at that. Only two on the list might be applicable for elementary children–the Mystery of the Periodic Table is one my kids read in 6th grade, and there is a John Tiner book as well that might be adaptable. The Mystery of the Periodic Table is definitely a living book! We love it. Remember there just isn’t a terrific amount on chemistry at early ages, as this is typically not taught until later grades.
HTH!