Relacionar Columnas AtomsVersión en línea Atoms por Patricia Gallego Galvez 1 Neutrons 2 Ionic bond 3 Niels Bohr 4 Metalic bond 5 Atomic nucleus 6 J. J. Thomson 7 Ionic crystals 8 Molecule 9 Covalent bond 10 Protons 11 Chemical bond 12 Atomic number (Z) 13 Periodic Table of Elements 14 Atom 15 Atomic Shell 16 Metalic crystals 17 Ernest Rutherford 18 Mass number (A) 19 Ions 20 Molecule properties 21 Isotopes 22 Covalent crystals 23 Jonh Dalton 24 Electrons The number of protons in the nucleus of an atom A table that classifies elements by their physical and chemical properties; rows are called periods; columns are called groups; A chemical bond formed when non-metal atoms share electrons An atom's dense central core, containing protons and neutrons. Heavy positively charged particles found within atomic nuclei. Negatively charged particles, with very small mass, found outside the nucleus Two or more non-metal atoms held together by covalent bonds A grouping of electrons surrounding the nucleus of an atom The force that holds atoms together An attraction between a positive metal ion and the electrons surrounding it 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 The smallest unit of matter that constitutes a chemical element. Charged atoms Atoms of the same element that have different numbers of neutrons Liquids or gases at room temperature. Some can be solid, but they melt at low temperatures. Very high melting and boiling points, soluble in water and good electrical conductors in solution or molten Heavy uncharged particles found within atomic nuclei From low to high melting and boiling points, insoluble in water and very good electrical conductors Formed when one or more electrons are transferred from one metal to non-metal atom