Chem 111- Unit 3 Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Question | Answer |
ammonium | NH4+ |
hydronium | H3O+ |
acetate | CH3COO- |
hydroxide | OH- |
chlorate | ClO3- |
perchlorate | ClO4- |
nitrate | NO3- |
permanganate | MnO4- |
carbonate | CO3 2- |
hydrogen carbonate | HCO3- |
dichromate | Cr2O7 2- |
phosphate | PO4 3- |
sulfate | SO4 2- |
empirical formula | defines the smallest whole number ratio of the atoms (usually ionic) |
molecular formula | accounts for all atoms present in the molecule (usually covalent) |
structural formula | shows atoms and bonding pattern |
diatomic molecules | hydrogen, nitrogen, oxygen, halogens |
1 mole | 6.022E10^23 things |
mass percent | the amount of mass each atom contributes to the total mass of the unit |
which atoms can have an expanded octet? | anything in period 3 or higher |
determining best Lewis structure (4) | -smaller formal charges -fewer formal charges -more negative charge for more electronegative atoms (v/v) -*some believe the octet rule is always best |
formal charge | the charge on an atom based on the drawn Lewis structure (# valence e's - assigned e's) |
electronegativity | the relative ability of a bonded atom to attract electrons (top right= highest) |
resonance structures | different ways of representing the same molecule w/ different bonding patterns |
electron delocalization | electrons delocalized due to different possible arrangements of single and double bonds |
bond order | (bonding pairs)/(positions) |
atoms that may have less than an octet | Be & B |
molecules that may have an unpaired electron | free radicals- NO, NO2 |
geometry & angle- 2 atoms around central | linear, 180 |
geometry & angle- 3 atoms around central | trigonal planar, 120 |
geometry & angle- 4 atoms around central | tetrahedral, 109.5 |
geometry & angle- 5 atoms around central | trigonal bipyramidal, 90 (axial) & 120 (equatorial) |
geometry & angle- 6 atoms around central | octahedral, 90 |
VSEPR | (valence shell electron pair repulsion) electrons are located as far apart as possible to minimize repulsions |
2 outer atoms, 1 lone pair | bent, <120 |
3 outer atoms, 1 lone pair | trigonal pyramidal, <109.5 |
2 outer atoms, 2 lone pairs | bent, <109.5 |
4 outer atoms, 1 lone pair | seesaw, <90, <120 **equatorial position |
3 outer atoms, 2 lone pairs | t-shaped, <90 **equatorial position |
2 outer atoms, 3 lone pairs | linear, 180 **equatorial position |
5 outer atoms, 1 lone pair | square pyramid, <90 |
4 outer atoms, 2 lone pairs | square planar, 90 |
d hybrid orbital used | when there are <4 atoms around the central atom |
lone pairs & orbitals | paired in hybrid orbitals |
double bond type(s) | 1 pi bond, 1 sigma bond |
triple bond type(s) | 2 pi bonds, 1 sigma bond |
central atom w/ formal charge | add/subtract an electron |
sigma bonds | end-to-end overlaps of orbitals |
pi bonds | side-to-side overlaps of orbitals |
Created by:
melaniebeale
Popular Chemistry sets