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.
The quarks, building blocks of proton and neutron.
This building block is the atom.
The smallest building block of all living things is 'Cells' This is what makes up, all of us & our DNA. (:
The smallest unit of an element is an atom. Atoms are the basic building blocks of matter and are composed of protons, neutrons, and electrons.
The building block of all molecules is an atom. Atoms combine together through chemical bonds to form molecules.
The smallest building block of a mineral is a atom.
Atom is a smallest building block
An atom is the smallest building block of matter that retains the characteristics of that matter.
An atom is the smallest building block of matter that retains the characteristics of that matter.
An atom is the smallest building block of matter that retains the characteristics of that matter.
An atom is the smallest building block of matter that retains the characteristics of that matter.
An atom. It not REALLY indivisible, but it is the fundamental building block of molecules.
The basic building block of matter is the atom.
quarks or stings in the string theory but if you do that as a home work... atoms or electron/proton/neutron should do the job.... depending what you have yet learnt.
DNA
The smallest particle of matter still retaining the elemental properties of matter is an atom. Atoms have building blocks, and they are protons, electrons and neutrons. But the atom, because it is made of these elemental building blocks, is the furthest we can break matter down and retain the elemental structure.We can further break down the building blocks of matter, the particles that make up the atom, but the resultant particles are not stable. They spontaneously go through changes and disappear.It is not an atom it is a quark
The smallest piece of a chemical compound is a molecule. The smallest part of an element is an atom. The smallest part of an atom (meaning of the proton, neutron and electron, which are an atom's building blocks) is the electron. Beyond that, the quark is a fundamental building block of matter, and it makes up neutrons and protons. Quarks also explain the "particle zoo" seen before the Standard Model arose to gather the phenomenon under one theoretical umbrella.