Chapter 7
Chapter 8
extra review: challenge problems
Eg and Mg
Polyatomic Ions
100
A change in the physical properties of a substance.
What is a physical change?
100
The major component (higher concentration) in a homogeneous (evenly mixed) solution.
What is the solvent?
100
write the electron configuration for Ca
1s22s22p63s23p64s2
100
5 electron groups: 4 bonding 1 lone pair (include bond angle)
eg:Trigonal bipyramidal
mg: Seesaw <120, <90
100
phosphate
PO43-
200
when a chemical substance is transformed into one or more different substances
what is a chemical change?
200
The minor component in a homogeneous solution.
what is the solute?
200
express 254,998 m in Km, Mm, and mm.
Km- 254.998 Km
Mm-2.54998 x10-1 Mm
mm- 244998x103 mm
200
6 electron groups: 5 bonding,1 lone pair
eg; octahedral
mg: Square pyramidal, <90
200
sulfite
SO32-
300
The reactant that results in the least amount of product.
What is the limiting reactant?
300
The measure of a concentration of a solution.
what is molarity?
300
write the lewis structure for BBr3
and determine the central atom's eg and mg.
eg: trigonal planar
300
2 electron groups
linear, 180
300
Dihydrgen phosphate
H2PO4-
400
Anything that is left over after the reaction. (NOT limiting)
What is excess reactant?
400
One conducts electricity when dissolves in a solution, one does not.
what is the difference between an electrolyte and a non-electrolyte?
400
Complete and balence the reaction: CrB2(aq) + Na2CO3 (aq)
This table is on page 330.
CrB2(aq) + Na2CO3 (aq) ---> CrCO3 (s) + 2NaBr (aq)
400
4 electron gropus; 2 bonding 2 lone pairs
eg; tetrahedral
mg : bent
400
nitrite
NO2-
500
Amount of product that can be made based on limiting reactant.
What is a theoretical yield?
500
A solution in which a large fraction of the dissolved solute exists as ions
What is a strong electrolyte?
500
to what volume should you dilute 50.0 mL of a 12 M HNO3 solution to obtain a 0.100 M HNO3 solution?
6.0 L
500
3 electron groups; 1 lone pair 2 bonding
eg; trigonal planar
mg; trigonal pyramidal ,109.5
500
carbonate
CO32-