I learned that matter could not be created nor destroyed. I also learned that energy could not be created nor destroyed. But now I'm confused so I figure I would ask the experts to clarify so I can figure this out. Someobody told me, (and I'm not sure if it's true or not so please advise) that we have particle accelerators capable of creating tiny ammounts of antimatter. In this process a tiny and comparable ammount of matter is created? I don't know maybe that's baloney. But nevertheless the red flag for me is when I learned about how nuclear weapons work. Apparently they take matter, and convert it to its equivelent in energy. So isn't this both destroying matter and creating energy? Are these laws out of date or do I just have a misunderstanding? I'm just highly confused is all.