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.
What is an Electron ? What is an electron ? is a question that can be answered at various levels of detail and complexity, depending on the context. This page describes electrons at the the level required for high school chemistry (GCSE to A-Level in the UK). Definition of an Electron: An electron is a subatomic particle that has a negative charge of -1 and is located in the volume of atoms around the nucleus (so not in the nucleus itself) Electrons have no known components or substructure and are therefore generally considered to be elementary particles.