Is there a word for an atomic unit of flour?

How about a mote of flour?

From the American Heritage Dictionary:

mote (n) A very small particle; speck.


Specks of flour:

  • a very little bit or particle:

    • We haven't a speck of sugar.

Dictionary.com

From: Great British Bake Off:,

  • Lift the rest of the flour into the bowl and continue folding in until you no longer see streaks or specks of flour. Transfer the mixture to...