Matching Pairs AtomsOnline version Atoms by Patricia Gallego Galvez 1 Atomic number (Z) 2 Covalent crystals 3 Niels Bohr 4 Metalic bond 5 Atomic nucleus 6 Molecule properties 7 Molecule 8 Electrons 9 Atomic Shell 10 Ionic crystals 11 Ernest Rutherford 12 J. J. Thomson 13 Protons 14 Jonh Dalton 15 Ions 16 Chemical bond 17 Ionic bond 18 Metalic crystals 19 Atom 20 Neutrons 21 Isotopes 22 Periodic Table of Elements 23 Mass number (A) 24 Covalent bond Negatively charged particles, with very small mass, found outside the nucleus Heavy positively charged particles found within atomic nuclei. Charged atoms Atoms of the same element that have different numbers of neutrons 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 Very high melting and boiling points, insoluble in water and not good electrical conductors 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 Two or more non-metal atoms held together by covalent bonds The smallest unit of matter that constitutes a chemical element. Heavy uncharged particles found within atomic nuclei 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 A grouping of electrons surrounding the nucleus of an atom The sum of the number of neutrons and protons in an atomic nucleus An atom's dense central core, containing protons and neutrons. The force that holds atoms together Liquids or gases at room temperature. Some can be solid, but they melt at low temperatures.
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