| ||For nearly a hundred years, scientists thought that atoms were the fundamental building blocks. But we now know that they have structure and the current picture of the fundamental building blocks of the Universe is very different from Dalton's.|
- Matter and energy are different forms of the same thing.
- There are two families of fundamental particles called quarks and leptons.
- They can never be seen and we can only make models of how they behave.
- They are held together by the exchange of other particles.
- There is antimatter as well as matter.
The descriptions of the different particles and the forces that hold them together is called The Standard Model. In this e_source, you can find out about the Standard Model - what it is, how it was developed and how we think it caused the Universe to evolve.