Hey, let’s keep things friendly now.
I could throw down a laundry list of things wrong with Saudi Arabia, so let’s just keep those types of attacks in the category of “stuff that doesn’t belong here”, even if meant in jest. Things can get out of hand quickly. I know you were joking, but I just don’t want to see the thread degrade into something it wasn’t meant to be.
But on a more serious note. Most kids don’t get good exposure to the table of elements until often high school(grades 9-12), sometimes Junior High(typically grades 7-8). A trip to the cafeteria can often be an exploration into science all on it’s own(is this gonna kill me?).
These days, with all the distractions, whatever it takes to get a kid into science, math, whatever, is good. If the OP is getting interested due to yoyo to connect that to chemistry, then all the better for that person. We can talk about the various metal and metal alloys used to make yoyos and what "all aluminum isn’t equal, or the complex chemical strings that make up silicone, polyester and the various plastics used to make yoyos.