Related Clues:

• Subject for John Dalton
• Mite
• ___ smasher
• Part of a molecule
• Big-bang material
• Lab particle
• It's just a little bit
• Ant who once teamed with Secret Squirrel
• Focus of Heisenberg's research
• Quark site
• It may get smashed
• Chemical building block
• Heart of the matter?
• Accelerator bit
• Chemistry subject