Final Exam Concepts Flashcards
Relation of enthalpy of an object and its surroundings?
q one = -q other
When does water conduct electricity?
When there are dissolved cations and anions
Which acids completely breakdown for net ionic equation?
Strong acids; Hydrochloric (HCL), Nitric (HNO3), Sulfuric (H2SO4)
Always soluble?
No3-
NH4+
Group 1 cations
Usually soluble?
Br-, Cl-, I- except with Ag Hg Pb
Usually insoluble?
S 2-, OH-, CO3 2-, PO4 3-
Which is the oxidizing agent?
The one that becomes more negative or less positive (gains electrons)
Oxidation number of pure element?
o
Oxidation number of O?
-2
Oxidation number of F?
-1
Oxidation number of H?
+1
Oxidation number of Group 1 metals?
+1
Oxidation number of Group 2 metals?
+2
How to solve half reactions?
Find in the table, balance the electrons
What to always check for with molecular equations?
Always check for limiting reagent
Avogadro’s number?
6.022 x 10^22 particles/ mol
Heterogenous?
Cloudy
Homogenous?
Clear
Emission dropping to n=1?
UV
Emission dropping to n=2?
Visible
Emission dropping to n=3?
IR
Sizes of atoms/ ions?
Down to left
Electronegativity of atoms?
Up to right
Diamagnetic?
No half-filled orbitals
Paramagnetic?
Half-filled orbital
Value on n?
Row on periodic table
Value of l?
0 up to n-1
Value of ml?
0 +- l
Value of ms?
+- 1/2
