| A | B |
|---|
| alloy | homogeneous mixture of 2 or more metals |
| face centered cubic | has atom orion at each corner and in center of each face |
| body centered cubic | has atom or ion at each corner and in center of cube |
| cubic | has atom or ion at each corner |
| high boiling point | ionic compound |
| high metling point | ionic compound |
| usually solid at room temperature | ionic compound |
| molten state | ionic compounds conduct electricity in this state |
| dissolved in water | ionic compounds conduct electricity in this state |
| rigid and brittle | ionic compound structure |
| metal and non metal | make up of ionic compound |
| cation | metals form these, loss of electrons |
| anion | non metals form these, gain of electrons |
| formula unit | smallest repeating unit of ionic compound |
| unit cell | smallest repeating structure in ionic compound |
| crystal lattice | 3D arrangement of ions |
| lead, tin, and transition metals | always get roman numerals |
| silver and zinc | never get roman numerals |
| sea of electrons | how electrons are found in metals |
| delocalized | electrons in metals; free to move thru solid |
| malleable | metals can be hammered into shapes |
| ductile | metals can be drawn into wires |
| weakly held | how metals hold electrons |
| substitutional alloy | when metal atoms are similar in size |
| interstitial alloy | when metla atoms are very different in size |
| brass, bronze, steel, 14kt gold, sterling silver | examples of alloys |
| alloys | have properties better suited for a purpose than the metal alone |
| lewis dots (electron dots) | show how many valence electrons there are |
| have more than one possible charge | transition metals and lead and tin |
| only have one charge | Group A metals and silver and zinc |
| always +1 | silver |
| always +2 | zinc |
| -ide | binary ionic compounds end in this |
| octet rule | elements want 8 electrons in the outer level |
| simplest ratio | ionic compounds must be written this way |
| salt | any ionic compound - does not start with H, or does not end with -OH |
| -ite ending | has one less oxygen than the -ate ending |
| hypo__ite | has 2 less oxygens than the -ate ending |
| per___ate | has one more oxygen than the -ate ending |
| electrostatic charge | what holds anions and cations together |
| transfer of electrons | how ionic compounds are formed |
| phosphate | PO4 -3 |
| sulfate | SO4 -2 |
| nitrate | NO3 -1 |
| acetate | CH3COO -1 |
| ammonium | NH4 +1 |
| permanganate | MnO4 -1 |
| chlorate | ClO3 -1 |
| hydroxide | OH- |
| lead(IV) | Pb +4 |
| tin(II) | Sn +2 |
| positive ion | always written first |
| crisscross method | how to write ionic formulas |
| group 2 metals | charge of +2 |
| group 1 metals | charge of +1 |
| group 3 metals | charge of +3 |
| group 5 nonmetals | charge of -3 |
| group 6 non metals | charge of -2 |
| group 7 non metals | charge of -1 |
| carbonate | CO3 -2 |
