It is an atom
An atom. Anything smaller is an atomic particle from which all elements are made.An atom is the smallest particle of an element that has properties of that element.An atom is the smallest unit of an element that retains the properties of that element.
The smallest subdivision that retains all of the properties of a molecular compound is a molecule, and the smallest subdivision that retains all of the properties of a ionic compound is a formula unit.
A molecule.
An atom of that element has all the properties of that element.
The smallest particle of an element that still has all the properties of an element is an atom of that element.
The atom is the smallest unit of an element that has all the properties of the element.
An atom. Anything smaller is an atomic particle from which all elements are made.An atom is the smallest particle of an element that has properties of that element.An atom is the smallest unit of an element that retains the properties of that element.
The smallest subdivision that retains all of the properties of a molecular compound is a molecule, and the smallest subdivision that retains all of the properties of a ionic compound is a formula unit.
All atoms have the same parts (protons,neutrons and electrons ). they just differ in number. So i don't think there's a smallest part of an atom that can keep all properties of an element. An element is defined by its Z number, which is the number of protons it has.
A molecule is the smallest part of a compound that still retains the properties of said compound. As the atom is the smallest particle of an element into which it can be divided and still retain all the properties of that element, the molecule is the atom's analog for a compound.
a molecule
A molecule.
The basic unit of matter is an atom. It is also the smallest part of an element that retains all the properties of that element. Since your question ended with an... I would say element fits best.
An atom of that element has all the properties of that element.
It is an atom
The smallest particle of an element that still has all the properties of an element is an atom of that element.
A molecule is the smallest particle of a "compound" being that compounds are made up of more than one atom. The smallest particle of any "chemical element" that retains its properties would be the atom.