Atom - The smallest part of matter, Element - A pure substance made up of only 1 type of atom which cannot be broken down chemically into any simpler substances., Compound - A substance made when two or more different elements/atoms are chemically bonded together., Electron - A particle with a negative charge which orbits the nucleus in atoms or ions., Neutron - A particle that has no charge and that is found in the nucleus of an atom., Proton - A particle that has a positive charge and that is found in the nucleus of an atom., Nucleus - The dense center of an atom., Molecule - Two or more atoms bonded together, Chemical Symbol - The one or two letter symbol that represents an element on the Periodic Table, Atomic Symbol - The number of an element on the Periodic Table; it is the same as the number of protons in the element's atoms, Chemical Formula - The representation of a compound that tells the types and numbers of atoms present ex. NaCl,

Atoms elements compounds

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