Related Clues:

• Units first theorized by the Greeks
• Very small quantities
• Bond holdings?
• Energy sources
• Indivisible particles
• Small quantities
• ''I'' in Ithaca
• Electrons' places
• Bits in bonds
• Tiny specks
• They can be split or charged
• Threesome in a water molecule
• Element makeup
• Fissionable material
• What matter is