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IPC Study Sheet Test Chap 19 Name_____________per____ 1. valence electrons-electrons in the outer energy level 2. energy levels-periods on the periodic table. Areas in the electron cloud 3. oxidation numbers-numbers that represent the gain or loss of electrons 4. ionic bond-bond between a metal and nonmetal 5. covalent bond-bond between 2 nonmetals 6. octet rule-maximum of 8 electrons in the outer energy level 7. ions-charged particle 8. electronegativity-highest level located as you go toward Fluorine 9. superscripts-numbers located above the element symbol 10.subscripts-numbers located below the elements symbol 11.chemical bond-attraction that holds the compound together 12.chemical formula-symbols and numbers the is shorthand for a compound 13.chemical symbol-abbreviation for an element 14.Where is the a. halogen group-group VII b. alkaline earth metals-group II c. alkali metals-group I d. noble gases- group VIII 15.How can you tell if it will be an ionic or covalent bond by looking at the elements? Ionic if you have a metal and nonmetal, covalent 2 nonmetals 16.binary compounds-compound made of 2 elements 17.monoatomic ions-single elements with oxidation numbers 18.polyatomic compounds-compounds that stay together through a reaction 19.diatomic molecules-7 special elements that when alone must have 2 of them------Br2, I2, N2, Cl2, H2, O2, F2 20.atomic mass-protons and neutrons total in the nucleus 21.atomic number-proton total or electron total 22.formula mass-total mass of all element mass for compound 23.What are the 3 types of information that a formula tells us? Kind of elements, number of each element, formula mass, polyatomic 24.Know how to count atoms. AlCl3 _4_ NaOH_3_ Fe(ClO3)3 _13__ LiH2PO4 __8__ Hg(NO3)2 _9_ 25. Count the formula mass. AlCl3 _132_ NaOH__40_ Fe(ClO3)3_305_ LiH2PO4_104_ Hg(NO3)2_325_ 26.Know how to dot diagram elements and compounds. Lithium Bromine Li dot diagram compound Ca +2 [ Cl ] Sn Tin CaCl2 [ Cl ]-1 Ionic Br -1 OF2 Covalent F O F 27.Know how to name and write formulas for binary compounds. (Cuprous) HCl Hydrochloric acid CuI Copper (I) Iodide MgBr2 Magnesium Bromide NiCl2 Nickel (II) Chloride stannous bromide SnBr2 carbon dioxide CO2 sodium nitride Na3N magnesium nitride Mg3N2 28.Know how to name and write formulas for polyatomic compounds. Na2CO3 sodium carbonate Al2(SO4)3 Aluminum Sulfate NaC2H3O2 Sodium Acetate AgNO3 Silver Nitrate magnesium sulfite MgSO3 ammonium carbonate (NH4)2CO3 aluminum phosphate AlPO4 ferric sulfate Fe2(SO4)3