the particle picture is best described as...
an element
an atom
a compound
a pure substance
both a pure substance and a compound
![the particle picture is best described asan elementan atoma compounda pure substanceboth a pure substance and a compound class=](https://us-static.z-dn.net/files/d7d/0d5783b872cc2da62b4ec8d382b9a43d.jpg)