1 Plaques and Frames revealing the family crest for the surname Trump. 2  Surname Histories for the name Trump. 3  Symbolism showing the Trump family crest. 4  Travel Mugs with the coat of arms for the name Trump.
atom - (physics and chemistry) the smallest component of an element having the chemical properties of the element. substance - the real physical matter of which a person or thing consists; DNA is the substance of our genes.
Originally Answered: What is the difference between atom and ion? Atom is the smallest part of element that can participate in a chemical reaction. It is ALWAYS neutral, meaning it has equal number of electrons and protons.