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Chem 07 Ionic/Metals
Terms associated with Ionic and Metallic Bonding
| Question | Answer |
|---|---|
| 2 or more elements chemically combined in a set ratio | compound |
| shorthand/abbreviation for a compound (uses symbols and subscripts) | formula |
| number written after and below symbol in chemical formula that tells number of that element in a compound formula | subscript |
| chemically stable elements in group 18 on the periodic table | noble gases |
| chemically stable arrangement of (8) electrons in the outer energy level (also known as n.g.c. - noble gas configuration) | stable octet |
| describes the electrons in the outer lever, or the level itself | valence |
| force that holds atoms together in a compound | bond |
| elements with 1-3 outer e-'s, on left side of PT, tend to be solids, good conductors, shiny, malleable/ductile AND LOSE ELECTRONS DURING IONIC BONDING | metals |
| elements with 5-7 outer e-'s, on right side of PT, tend to be poor conductors, brittle/dull solids or gases AND GAIN ELECTRONS DURING IONIC BONDING | nonmetals |
| simplified Bohr model that uses a symbol surrounded by dots to represent only an atom's valence electrons (a.k.a. Lewis structure) | dot diagram |
| an atom with an overall charge (due to gaining or losing e-s) | ion |
| a positively-charged ion (formed by losing electrons) | cation |
| a negatively-charged ion (formed by gaining electrons) | anion |
| attraction between oppositely-charged ions (in an ionic compound) | ionic bond |
| describes a compound composed of TWO different elements | binary |
| describes a compound composed of THREE different elements | ternary |
| element combo needed for ionic bonding | metal + nonmetal |
| used to identify the charge of a metal that forms MORE THAN ONE positive charge | Roman numerals |
| writing chemical formulas formed by 2 ions involved the ion-charge method or, more informally, the _?_ method | criss cross |
| a group of atoms with an overall charge that act as a single unit is called a _?_ ion (ex: hydroxide, sulfate, etc) | polyatomic |
| which group number has members that ONLY form ions with a charge of 1+ | 1 |
| which group number has members that ONLY form ions with a charge of 2+ | 2 |
| which group number has members that ONLY form ions with a charge of 1– | 17 |
| simplest ratio of ions in an ionic compound (ionics do NOT make molecules); Ex: NaCl is the _?_ for sodium chloride | formula unit |
| solid whose particles are arranged in a regular geometry | crystal |
| smallest repeating building block of a crystal (Ex: the _?_ for copper (II) sulfate is triclinic) | unit cell |
| overall repeating pattern of particles within a crystal is the crystal _?_ | lattice |
| the # of oppositely-charged ions surrounding a particular ion in a crystal is called the _?_ number | coordination |
| what is the coordination number for both Na+ and Cl– ions in NaCl (table salt)? | 6 |
| the unit cell (shape) of NaCl (table salt/sodium chloride) crystals; it is also called 'isometric' | cubic |
| the loose, mobile valence electrons in metals are sometimes referred to as (somewhat metaphorically) an electron _?_ | sea |
| metals have the ability to be flattened without breaking, so they are described as _?_ | malleable |
| the shine of metals because of their ability to reflect light well when polished is called _?_ | luster |
| because a metal allows electricity and heat to pass through easily, it is described as a good _?_ | conductor |
| a system for naming compounds such as that used for the "Divide and Conquer" worksheet | nomenclature |
| suffix that ends the name of all binary ionic compounds | ide |
| ending that is common in many polyatomic ions containing oxygen | ate |
| how many atoms are represented by the formula (NH4)3PO4? | 20 |
| which condition of an ionic compound does NOT conduct: solid, liquid, or dissolved? | solid |
| describes a solid whose solution conducts electricity (ex: NaCl) | electrolyte |
| when you have an ion combination with charges of 4+/2– during the criss cross procedure, you will need to eventually _?_ the ratio in the final formula | reduce |
| when trying to name a compound from its formula, what specific item do you look for FIRST to put the divider line after? (then you put it after 1st symbol for the rest) | ammonium |
| when trying to name a compound that contains a metal that uses Roman numerals, you should do _?_ work to be sure to pick the correct Roman numeral | scratch |
| insoluble solid product of 2 dissolved (ionic) compounds | precipitate |
| which group number has members that ONLY form ions with a charge of 2– | 16 |
| which group number has members that form ions with a charge of 3– | 15 |
| which group number has members that form ions with a charge of 3+ | 13 |
| which group number has members that ONLY form ions with a charge of 1– | 17 |
| which group number has members that form ions with a charge of 1+ | 1 |
| which group number has members that form ions with a charge of 2+ | 2 |
Created by:
goakley
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