Atom
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
An atom is the smallest particle of an element that still carries that element's properties and can take part in a chemical combination.
Show
Repeatedly halving a piece of gold eventually reaches a single gold atom, the smallest unit still recognizably gold.
Watch for
An atom is not infinitely divisible — dividing it further no longer yields smaller pieces of that same element.