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.
The smallest unit of an element, consisting of at least one proton and (for all elements except hydrogen) one or more neutrons in a dense central nucleus, surrounded by one or more shells of electrons. In electrically neutral atoms, the number of protons equals the number of electrons.