Relacionar Columnas AtomsVersión en línea Atoms por Patricia Gallego Galvez 1 Ions 2 Molecule properties 3 Covalent bond 4 Metalic bond 5 Atom 6 Chemical bond 7 J. J. Thomson 8 Atomic nucleus 9 Ionic bond 10 Electrons 11 Neutrons 12 Mass number (A) 13 Niels Bohr 14 Ernest Rutherford 15 Ionic crystals 16 Protons 17 Atomic Shell 18 Covalent crystals 19 Atomic number (Z) 20 Isotopes 21 Jonh Dalton 22 Molecule 23 Periodic Table of Elements 24 Metalic crystals A table that classifies elements by their physical and chemical properties; rows are called periods; columns are called groups; The force that holds atoms together Two or more non-metal atoms held together by covalent bonds An atom's dense central core, containing protons and neutrons. Heavy uncharged particles found within atomic nuclei Liquids or gases at room temperature. Some can be solid, but they melt at low temperatures. Atoms of the same element that have different numbers of neutrons A chemical bond formed when non-metal atoms share electrons From low to high melting and boiling points, insoluble in water and very good electrical conductors The sum of the number of neutrons and protons in an atomic nucleus Very high melting and boiling points, insoluble in water and not good electrical conductors Negatively charged particles, with very small mass, found outside the nucleus Formed when one or more electrons are transferred from one metal to non-metal atom A grouping of electrons surrounding the nucleus of an atom The number of protons in the nucleus of an atom The smallest unit of matter that constitutes a chemical element. Charged atoms An attraction between a positive metal ion and the electrons surrounding it Very high melting and boiling points, soluble in water and good electrical conductors in solution or molten Heavy positively charged particles found within atomic nuclei.