The smallest unit of a pure substance that consists of two or more atoms held together by a chemical bond is a molecule.
The smallest unit of a pure substance that consists of two or more atoms held together by a chemical bond is?
a molecule
molecule
compound
This is called a compound.
A molecule
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.
a molecule is the smallest unit of a compound
Compound
compound
a compound
This is called a compound.
A molecule
compound
it is mixtures not compounds
it is mixtures not compounds
A molecule is the smallest unit with the characteristic properties of a molecular substance, i.e., one joined by covalent bonds. A single atom is the smallest unit with the characteristic properties of an elemental substance.
chemical formula
A formula unit can also be referred to a mole unit. A mole or formula unit is the smallest amount of a substance that contains all the atoms or elements of a substance.
A molecule is the smallest neutral unit of two or more atoms held together by a covalent bond.