It is a molecule.
An atom is the smallest particle of a substance.
This smallest "thing" is the atom.
The smallest unit of a substance that has the properties would be either an atom, or more probably a molecule. An atom does not ordinarily exist by itself in nature.
If that substance is an element, the smallest part is the atom which, if broken down further into atomic particles, loses its identity.
The smallest particle of a substance that retains all properties is an atom. An atom is composed of a nucleus containing protons and neutrons, surrounded by electrons. In some cases, atoms can combine to form molecules, but the individual atom remains the smallest unit that retains the substance's properties.
An atom is the smallest particle of a substance.
An atom is the smallest particle of a substance.
This smallest "thing" is the atom.
atom
ATOM
An atom, these include protons, neutrons and electrons. The number of these smaller particles is what distingushes one atom of an element for another. For example, an atom of oxygen has 8 protons, neutrons, and electrons while a hydrogen atom has 1 proton neutron and electron
The smallest unit of a substance that has the properties would be either an atom, or more probably a molecule. An atom does not ordinarily exist by itself in nature.
Either an atom or a molecule, depending on the substance.
If that substance is an element, the smallest part is the atom which, if broken down further into atomic particles, loses its identity.
an atom is the smallest part of any substance a substance has to be an atomic structure because every substance has at least one atom.
Either an atom or a molecule, depending on the substance.
an atom