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