Mistakes Flashcards
Hydrogen ion (3)
aka H+ aka a proton, present in acids
Ionic solids (4)
(1) conductive when dissolved in water (2) hard (3) brittle (4) a poor conductor of electricity because it’s valence e- are localized on the anions
Molecular solids (3)
(1) poor conductors of electricity (2) experience intermolecular forces (3) relatively low melting points, especially compared to covalent network solids
Retention factor
(1) R sub f used in TLC (2) equal to distance traveled by the solute dot, all over distance traveled by solvent starting from the solute dot
2nd light equation
C = lambda (v)
Where c = 2.998 × 10^8 m s^-1
Lambda = wavelength
V = frequency
Hydron
A hydrogen cation (H+)
Isotope (3)
(1) an atom with a specific # of neutrons
(2) designated in the form: element name, dash , mass number; ie, hydrogen-3
(3) an element can have multiple of these which are all chemically stable
uamu (4)
(1) symbol “u”
(2) sometimes amu for short
(3) stands for “unified atomic mass unit”
(4) equal to the mass of a nucleon, and approximately 2,000 times more massive than an e-
ammonium ion
NH4^+1
mass number (2)
(1) the number of protons plus the number of neutrons, in the nucleus (2) designates a specific isotope of an element
deuteron, triton (2)
(1) a hydron with one and two neutrons, respectively (2) or in other words, two and three nucleons, respectively
finding ionization energy from PES (2)
(1) look for peaks corresponding to individual subshells (2) cannot be extrapolated to 2nd ionization energy, because once an e- is removed, the remaining ones will be held more tightly by the nucleus
ionization energy (3)
(1) expressed in kJ / mol (2) aka ionization potential (3) the energy required to remove an electron from a particle
ion
an atom or molecule with a net electric charge due to the loss or gain of one or more electrons
redox reaction (2)
(1) short for reduction-oxidation reaction (2) a reaction in which one or more atoms change their oxidation number (ie, gain or lose electrons)
