1. Accelerate - to speed up
2. Accelerator - a machine which accelerates charged particles to high energies
3. Antimatter - matter that is exactly the opposite in every way from its matter counterpart: antiquark/quark; positron/electron
4. Atom - the smallest unit of a chemical element, made up of a nucleus surrounded by electrons
5. Beam - a ray of light; a group of particles traveling together along a well-defined path