Explain the difference between matter made up of more than one element in matter made up of only one element

A substance that cannot be broken down into chemically simpler components is an element.

A substance that can be broken down into chemically simpler components (because it has more than 1 element) is a compound. Example: Water id a compound composed of elements hydrogen and oxygen.

characterization of nanoparticles is a critical step in nanomaterial production as it provides information of dimension, morphology, surface charge, distribution and degree of surface functionalization.

meteorologists would compare a new weather map with one 24 h old to see how fast a front is moving.