Any substance that cannot be broken down into simpler substances is an?
elements
An element cannot be separated into simpler substances by chemical means.
An element cannot be broken down into a simpler substance by chemical means.
no
element
An element.
pure
an element
You think probable to an atom.
elements
An element cannot be separated into simpler substances by chemical means.
An element cannot be broken down into a simpler substance by chemical means.
An element.
An element.
no
element
An element.