Related Clues:

• Parts of molecules
• They may be exchanged in chambers
• Physics particles
• They're charged
• 0's and 1's, to a programmer
• Bridle parts
• Morsels
• Memory units
• Exchanged items, maybe
• Crumbs
• Tiny quantities
• Particles in particle accelerators
• Smithereens
• Ca++ and Cl-
• Tiny amounts