B9 & B.10 Supplement: Ions and Ionic Compounds.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
Cation
Ca2+
Na+
NH4+
CU2+
Fe3+
K+
Na+
Ag+
Zn2+
Ba2+
Al3+
K+
Mg2+
Ba2+
Zn2+
Ca2+
Fe3+
Pb2+
Pb2+
Li+
Anion
O2ClNO3OH-
Formula
CaO
NaCl
NH4NO3
Cu(OH)2
Name
Calcium oxide
Sodium chloride
Ammonium nitrate
Copper(II) hydroxide
SO42SO32PO43S2BrF1PO43S2O2SO42PO43HCO3ClCO32BrNO3-
Fe2(SO4)3
K2SO3
Na3PO4
Ag2S
ZnBr2
BaF2
AlPO4
K2S
MgO
BaSO4
Zn3(PO4)2
Ca(HCO3)2
FeCl3
PbCO3
PbBr2
LiNO3
Iron(III) sulfate
Potassium sulfite
Sodium phosphate
Silver sulfide
Zinc bromide
Barium fluoride
Aluminum phosphate
Potassium sulfide
Magnesium oxide
Barium sulfate
Zinc phosphate
Calcium hydrogen carbonate
Iron(III) chloride
Lead(II) carbonate
Lead(II) bromide
Lithium nitrate
Section B Supplement
1. A characteristic exhibited by a substance that does not involve interacting with or changing into other
substances.
2. Several answers are possible: odor, density, boiling point, freezing point, etc.
3. The mixture is a colloid. There are no particles large enough to settle out (ruling out the possibility of
a suspension), but small particles ARE present―as light was scattered. Therefore, it is not a solution
(which would contain no particles) and IS a colloid.
4. Draw a model of a solution in which water (H2O) is the solvent and carbon dioxide gas (CO2) is the
solute.
Student models should show a mixture of water molecules and carbon dioxide molecules. There
should be noticeable more water molecules than carbon dioxide molecules.
5.
a. NaCl compound
b. C element
c. CO compound
d. KNO3 compound
6. Draw a model of a molecular compound made up of two atoms of B and two atoms of E.
Student answers may include variations of:
= B and = E
7. Complete the following table by naming the elements present and the number of each type of atom.
Compound Element Names
Number of Atoms of Each Element
H2SO4
H = Hydrogen; S = Sulfur; O = Oxygen
H2 S1 O4
CO2
C = Carbon; O = Oxygen
C1 O2
CaCl2
Ca = Calcium; Cl = Chlorine
Ca 1 Cl 2
Al2S3
Al = Aluminum; S = Sulfur
Al 2 S 3
NH4NO3
N = Nitrogen; H = Hydrogen; O = Oxygen
N2 H4 O3
8. N2 + 3H2 → 2NH3
9. Protons are positive and electrons are negative. They are equal and opposite in change.
10.
Element
Protons Electrons
Neutral?
Gold
79
76
No,
positive
Helium
2
2
Yes
Fluorine
9
10
No,
negative.
Sodium
11
11
Yes.
11.
a. K+ cation
b. Ag neutral
12.
a. hydrogen with one proton and one electron H
b. lithium with three protons and two electrons Li1+
c. fluorine with nine protons and ten electrons F113.
Cation Anion Formula
c. N3- anion
d. Ba2+ cation
Name
Mg2+
O2-
MgO
magnesium oxide
Al3+
Cl-
AlCl3
aluminum chloride
Mg2+
NO3-
Mg(NO3)2
magnesium nitrate
NH4+
CO32-
NH4(CO3)2
ammonium carbonate
14.
a. A precipitate is an insoluble substance that separates from water (as a solid) in solution.
b. Chloride ion is present in Stream A.
c. It is not possible to conclude whether or not chloride is present in Stream B. The best we can say
is that chloride ion is not present in detectable levels in Stream B.