Answer: molecule

AnswerCrossword Clue
MOLECULEParticle of matter.
moleculetiny bit particle
moleculethe smallest physical unit of an element
moleculethe smallest particle of a substance that retains all the properties of the substance and is composed of one or more atoms
MOLECULEBond part
MOLECULEAtomic cluster
MOLECULETiny bit
MOLECULEChemistry class model
MOLECULEMinute particle.
MOLECULEAtom's home
MOLECULEIt consists of atoms.
MOLECULEIt has bonds that are hard to break
MOLECULEWhat can be edited with the Avogadro app
MOLECULEGroup of atoms
MOLECULEPair of bonded atoms, say
MOLECULESmallest physical unit of an element
MOLECULETeensy bit