Questions
When observed independently, which of the following are indications that a chemical reaction has occurred?Select all that apply.
Temperature change
Formation of a precipitate
Change in odor
Classify each compound as water soluble or water insoluble.
: Water soluble
: Water soluble
: Water soluble
: Water insoluble

Select the net ionic equation for the reaction that occurs when sodium hydroxide and nickel(II)nitrate are mixed.
K2SO4
AgNO3
FeCl3
Cu(OH)2
Ni2+(aq) + 2 OH−(aq) ⟶ Ni(OH)2(s)

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Select the net ionic equation for the reaction that occurs when potassium iodide and lead(II) nitrate
are mixed.
Select the net ionic equation for the reaction that occurs when sodium carbonate and calcium
chloride are mixed.
Select the net ionic equation for the reaction that occurs when potassium acetate and silver nitrate
are mixed.
Select the net ionic equation for the reaction that occurs when sodium carbonate and nitric acid are
mixed.
Select the net ionic equation for the reaction that occurs when sodium hydroxide and nitric acid are
mixed.
Select the net ionic equation for the reaction that occurs when sodium acetate and sulfuric acid are
mixed.
For each pair of reactants, will there be a reaction?
: Reaction
: Reaction
: Reaction
: No reaction
Select the net ionic equation for the reaction that occurs when magnesium metal and sulfuric acid
are mixed.
Select the net ionic equation for the reaction that occurs when aluminum metal and hydrochloric
acid are mixed.
Pb2+(aq) + 2 I−(aq) ⟶ PbI2(s)
Ca2+(aq) + CO32−(aq) ⟶ CaCO3(s)
No reaction occurs
2 H+(aq) + CO32−(aq) ⟶ H2O(l) + CO2(g)
H+(aq) + OH−(aq) ⟶ H2O(l)
No reaction occurs
Zn(s) + HCl(aq)
Zn(s) + CuSO4(aq)
Mn(s) + Ni(NO3)2(aq)
Sn(s) + Mg(NO3)2(aq)
Mg(s) + 2 H+(aq) ⟶ Mg2+(aq) + H2(g)
2 Al(s) + 6 H+(aq) ⟶ 2 Al3+(aq) + 3 H2(g)

9/3/22, 9:14 AM Laboratory Simulation
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Select the net ionic equation for the reaction that occurs when magnesium metal and nickel(II)
nitrate are mixed.
Collected Lab Data
Displacement Reactions
Reaction Observations
(Before mixing)
Observations
(After mixing)
Classify Reaction
(Select all that apply)
+
The sodium
hydroxide solution
was clear and the
nickel (II) was a
blue-green color.
The mixture was a blue-
green color with mostly
the green settled on the
top and no heat was
emitting from the tube.
Precipitation
+
The potassium
iodide was clear
and the lead (II)
nitrate was yellow.
The mixture remains
mostly clean with some
yellow substance on the
top of the solution. No
heat was emitting from
the tube.
Precipitation
+
The sodium
carbonate as well
as calcium chloride
are clear in
appearance.
The mixture remains
mostly clear with some
white substance
formation on the top. No
heat was emitting from
the tube.
Precipitation
+
Potassium acetate
and silver nitrate
are clear in
appearance.
The mixture remained the
same with no heat
emitting from the tube.
No reaction occurred
Displacement Reactions Involving Acids
Reaction
Observations
(Before
mixing)
Observations
(After mixing)
Classify Reaction
(Select all that apply)
+
Both solutions
are clear in
appearance.
The color remains clear
and produces gas. The
tube feels heated.
Exothermic
Gas producing
Neutralization
+
Both solutions
are clear in
appearance
No change in color or
reaction was observed.
The tube feels heated.
Exothermic
Neutralization
Mg(s) + Ni2+(aq) ⟶ Mg2+(aq) + Ni(s)