Studied by 6 people
Converting from AMU to Grams
Divide by Avogadro’s Number
Atomicity
Number of atoms in a molecule (ex. H20 = 3)
Homoatomic vs Heteroatomic
Monoatomic, Diatomic, Polyatomic (No hetero will be mono)
Micromolecules vs Macromolecules
Less than versus greater than 10,000 AMU
Haemoglobin
10,000 atomicity exactly = 68,000x heavier than hydrogen
Ionic Compounds and Giant Molecules use ______
Formula Units (Not Molecules)
Directionality
Ionic is non-directional, Covalent is directional due to Electron Geometry
Atom vs Molecule
Atom is smallest unit of an element, and does not always exist independently - Molecule is the smallest unit of a pure substance, and always exists independently. Molecules can be elements or compounds.
Compounds must have a __ and cannot be separated __
Fixed Ratio, Physically
AMU
Reciprocal of Avogadro’s Number - 1.661x10^-24 g or 10^-27 kg
Carbon-12 is basis of AMU because ____
Relative Atomic Mass is closest to a whole number
AMU vs Nucleon (Sum of Protons and Neutrons)
AMU is not always whole (it is an average of the isotopic nucleons), but Nucleon number is always whole
Quick Lime is also known as ___
Calcium Oxide (CaO)
Order of Ion Mass
Anion > Neutral > Cation
Thermal Order of Anions
Uni-negative is exothermic, Bi- and Tri-negative is Endothermic
Abundancy of Ions by Atomicity
Monoatomic = Cations are more abundant, Polyatomic = Anions are more abundant
Formation of Molecular Ions
Removing or adding an electron by passing a high-energy electron beam or alpha particles (electron-less helium nucleus, 2p2n) through a gas (ex. CH4+, CO+)
Isotopes
Same P, Different N (Same Element)
Isobars
(Same sum of nucleons, Different P)
Isotones
Same A minus Z value (Nucleon Number minus Atomic Number = # of Neutrons), but different A and Z values
Isoelectronic
Same number of electrons (including neutral and atomic molecules)
Molar Volume
22.414dm^3 at 25°C (298K) and 1 ATM
Mole Formulas
v/Vm, g/gmol, Number of Molecules/Avogadro
Note 
Flashcard (24)