What is the smallest particle of a compound that has all the properties of that compound?
What is the smallest particle of a substance that has all of the properties of that substance called?
What is the smallest particle of an element that has all of the chemical properties of that element?
Smallest particle of a substance that retains all the properties of the substance and is composed of one or more atoms?
The smallest particle into which a substance can be divided and still retain all of its chemical properties is?
There are two definitions that can answer particulate identity at its singular unit. If the given is a pure element, the smallest particle retaining identity would be the individual atom (or diatomic molecule in some gases as in O2). If the substance is a molecular compound such as water, its smallest identifying unit would be a single H20 molecule.