Transcript Wednesday, September 5

Today we will:
1. Share lab data
2. Review homework
3. Take a review quiz
Homework:
Finish your lab write-up.
For your discussion, answer
the “Analyze and Conclude”
questions on page 301.
Daily Quiz 10.3:
Daily Quiz 10.3:
1. You are analyzing a mysterious
element X. You find that when
ionized, X has a charge of -2.
This element could be…
a. Lithium (Li)
b. Beryllium (Be)
c. Oxygen (O)
d. Fluorine (F)
Daily Quiz 10.3:
2. The formula for magnesium
chloride is…
a. MgCl
b. Mg2Cl
c. MgCl2
d. Mg2Cl2
Daily Quiz 10.3:
3. The formula for lithium
oxide is…
a. LiO
b. Li2O
c. LiO2
d. Li2O2
Daily Quiz 10.3:
4. An atom loses two electrons
to become an ion. Its charge
is…
a. +1
b. -1
c. +2
d. -2
Daily Quiz 10.3:
1. You are analyzing a mysterious
element X. You find that when
ionized, X has a charge of -2.
This element could be…
a. Lithium (Li)
b. Beryllium (Be)
c. Oxygen (O)
d. Fluorine (F)
Daily Quiz 10.3:
1. You are analyzing a mysterious
element X. You find that when
ionized, X has a charge of -2.
This element could be…
a. Lithium (Li)
b. Beryllium (Be)
c. Oxygen (O)
d. Fluorine (F)
Daily Quiz 10.3:
2. The formula for magnesium
chloride is…
a. MgCl
b. Mg2Cl
c. MgCl2
d. Mg2Cl2
Daily Quiz 10.3:
2. The formula for magnesium
chloride is…
a. MgCl
b. Mg2Cl
c. MgCl2
d. Mg2Cl2
Daily Quiz 10.3:
3. The formula for lithium
oxide is…
a. LiO
b. Li2O
c. LiO2
d. Li2O2
Daily Quiz 10.3:
3. The formula for lithium
oxide is…
a. LiO
b. Li2O
c. LiO2
d. Li2O2
Daily Quiz 10.3:
4. An atom loses two electrons
to become an ion. Its charge
is…
a. +1
b. -1
c. +2
d. -2
Daily Quiz 10.3:
4. An atom loses two electrons
to become an ion. Its charge
is…
a. +1
b. -1
c. +2
d. -2
Zn
Zn(NO3)2
Pb
PbNO3
Mg
Mg(NO3)2
Cu
Cu(NO3)
Ag
AgNO3
Al(NO3)3
Al
Homework Review:
Problems 33-37
Pages 292-294
Homework Review:
33. Aqueous solutions of potassium
iodide and silver nitrate are mixed,
forming a precipitate of silver iodide.
Skeleton Equation:
33. Aqueous solutions of potassium
iodide and silver nitrate are mixed,
forming a precipitate of silver iodide.
KI(aq) + AgNO3 (aq) →
KNO3(aq) + AgI(s)
Balanced Chemical Equation:
KI(aq) + AgNO3 (aq) →
KNO3(aq) + AgI(s)
Balanced Chemical Equation:
This equation is already balanced.
KI(aq) + AgNO3 (aq) →
KNO3(aq) + AgI(s)
Complete Ionic Equation:
Cross out spectator ions to make
the net ionic equation.
K+(aq) + I-(aq) + Ag +(aq) + NO3-(aq)
→ K+(aq) + NO3-(aq) + AgI(s)
Complete Ionic Equation:
Cross out spectator ions to make
the net ionic equation.
K+(aq) + I-(aq) + Ag +(aq) + NO3-(aq)
→ K+(aq) + NO3-(aq) + AgI(s)
Complete Ionic Equation:
Cross out spectator ions to make
the net ionic equation.
K+(aq) + I-(aq) + Ag +(aq) + NO3-(aq)
→ K+(aq) + NO3-(aq) + AgI(s)
Complete Ionic Equation:
Cross out spectator ions to make
the net ionic equation.
K+(aq) + I-(aq) + Ag +(aq) + NO3-(aq)
→ K+(aq) + NO3-(aq) + AgI(s)
Net Ionic Equation:
I-(aq) + Ag +(aq) → AgI(s)
Problem 34:
Aqueous solutions of ammonium
phosphate and sodium sulfate are
mixed. No precipitate forms and no
gas is produced.
Skeleton Equation:
Aqueous solutions of ammonium
phosphate and sodium sulfate are
mixed. No precipitate forms and no
gas is produced.
(NH4)3PO4 (aq) + Na2SO4 (aq) →
NR
Problem 35:
Aqueous solutions of aluminum
chloride and sodium hydroxide are
mixed, forming a precipitate of
aluminum hydroxide.
Skeleton Equation:
Aqueous solutions of aluminum
chloride and sodium hydroxide are
mixed, forming a precipitate of
aluminum hydroxide.
AlCl3(aq) + NaOH(aq) →
Al(OH)3(aq) + NaCl(s)
Balanced Chemical Equation:
Aqueous solutions of aluminum
chloride and sodium hydroxide are
mixed, forming a precipitate of
aluminum hydroxide.
AlCl3(aq) + 3NaOH(aq) →
Al(OH)3(s) + 3NaCl(aq)
Complete Ionic Equation:
Aqueous solutions of aluminum
chloride and sodium hydroxide are
mixed, forming a precipitate of
aluminum hydroxide.
Al+3(aq) + 3Cl-(aq) +
3Na +(aq) + 3OH- (aq) →
Al(OH)3(s) + 3Na +(aq) + 3Cl-(aq)
Net Ionic Equation:
Aqueous solutions of aluminum
chloride and sodium hydroxide are
mixed, forming a precipitate of
aluminum hydroxide.
Al+3(aq) + 3OH- (aq) → Al(OH)3(s)
Problem 36:
Aqueous solutions of lithium sulfate
and calcium nitrate are mixed,
forming a precipitate of calcium
sulfate.
Skeleton Equation:
Aqueous solutions of lithium sulfate
and calcium nitrate are mixed,
forming a precipitate of calcium
sulfate.
Li2SO4(aq) + Ca(NO3)2(aq) →
LiNO3(aq) + CaSO4(s)
Balanced Chemical Equation:
Aqueous solutions of lithium sulfate
and calcium nitrate are mixed,
forming a precipitate of calcium
sulfate.
Li2SO4(aq) + Ca(NO3)2(aq) →
2LiNO3(aq) + CaSO4(s)
Complete Ionic Equation:
Aqueous solutions of lithium sulfate
and calcium nitrate are mixed,
forming a precipitate of calcium
sulfate.
2Li+(aq) + SO4- 2(aq) +
Ca+2(aq) + 2NO3-(aq) →
2Li+(aq) + 2NO3-(aq) + CaSO4(s)
Net Ionic Equation:
Aqueous solutions of lithium sulfate
and calcium nitrate are mixed,
forming a precipitate of calcium
sulfate.
SO4- 2(aq) + Ca+2(aq) → CaSO4(s)
Problem 37:
Aqueous solutions of sodium
carbonate and manganese(V)
chloride are mixed, forming the
precipitate manganese(V) carbonate.
Skeleton Equation:
Aqueous solutions of sodium
carbonate and manganese(V)
chloride are mixed, forming the
precipitate manganese(V) carbonate.
Na2CO3(aq) + MnCL5(aq) →
NaCl(aq) + Mn2(CO3)5(s)
Balanced Chemical Equation:
Aqueous solutions of sodium
carbonate and manganese(V)
chloride are mixed, forming the
precipitate manganese(V) carbonate.
5Na2CO3(aq) + 2MnCL5(aq) →
10NaCl(aq) + Mn2(CO3)5(s)
Complete Ionic Equation:
10Na+(aq) + 5CO3-2(aq) +
2Mn+5(aq) + 10Cl-(aq) →
10Na+(aq) + 10Cl-(aq) +
Mn2(CO3)5(s)
Net Ionic Equation:
5CO3-2(aq) + 2Mn+5(aq) + →
Mn2(CO3)5(s)
Homework:
Finish your lab write-up.
For your discussion, answer
the “Analyze and Conclude”
questions on page 301.