Atomic Structure 3.0 / 5 based on 1 rating ? ChemistryStructure and bondingGCSENone Created by: Erin GoslingCreated on: 10-05-13 21:49 Atom The smallest indivisible particle 1 of 10 Molecule A particle made up of two or more atoms covalently bonded together 2 of 10 Proton A positively charged particle found in the nucleus of an atom. Relative mass = 1, relative charge = 0 3 of 10 Neutron A neutral particle found in the nucleus of an atom. Relative mass = 1, relative charge = 0 4 of 10 Electron A negatively charged particle found in the shells around the nucleus of an atom. Relative mass = 1/2000, relative charge = -1 5 of 10 Atomic number The number of protons in an atom (also gives number of electrons) 6 of 10 Mass number Total number of protons + neutrons in an atom 7 of 10 Isotopes Atoms of the same element which have the same atomic number but different mass number (same number of protons different number of neutrons) 8 of 10 Relative atomic mass Average mass of an atom compared to 1/12 mass of an atom 12C 9 of 10 Electronic Configuration (electron structure) The notation which describes how many electrons are in each shell of an atom (e.g. Na = 2,8,1) 10 of 10
Comments
No comments have yet been made