Until I learned about it in eighth grade, I thought the periodic table didn't always look the same way. It made sense to me that it could be rearranged, since it looked like such a crazy shape already.
This belief probably arose from the fact that, because of that crazy shape, I could never remember what it looked like between the times I saw it.
A childhood belief about chemistry

others believed things like this
- I used to think that the moon was God's toe nail, when it was in the shape of a crecent— Ms.imagination
- I used to believe that if i watched too much TV my pupils would take the shape of squares— Tilda
- In Beyonce's song 'Crazy in Love', I always thought she said 'Daisy right now'.Anon
- My dad told me that kiwi fruits were kiwi birds testicles. They are the right shape and kind of furry— jefnier
- King Henry VIII was named “the eighth” by his dad because the first seven didn’t listen!— Mojo
- After watching a crazy TV show, I believed that aliens were real. I still have a little fear of them. — Niki005