Ok, Electrons, protons, and nuetrons are made up of quarks. I think there are 6 different types of quarks. Some examples are ups and downs.

Remember the law of conservation of mass? Well it's true!!!!! Matter cannot be created nor destroyed, it can only be converted to energy! You could not, for instance, smash the universe into a space that is at the subatomic level! Matter takes up a certain amout of space! You can't compact it to whatever you feel like! No matter how close together you get the particles, you can't just keep going, there is a certain stopping point for all matter. Unless the matter is converted to energy. Then, I don't know. I'm not an expert, that's just what I believe.