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