Lujan Test 3 Balancing Chemical Equation, Conservation Of Matter, Naming Compounds Question Preview (ID: 36233)
Test 3.
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What coefficients are needed to balance the following equation: __H2 + __O2 = __H2O
a) 2, 1, 2
b) 1, 1, 1
c) 1, 2, 1
d) 2, 2, 2
How many atoms does the compound, K2MnO7 contain?
a) 10
b) 11
c) 14
d) 1
Chemical equations illustrate
a) Law of Conservation of Matter
b) Law of Conservation of Energy
c) chemical reactions
d) all of the above
What coefficients will balance the following equation: __Na + __O2 = __Na2O
a) 4, 1, 2
b) 1, 4, 2
c) 1, 2, 4
d) none of the above
Fe + Cl2 -- FeCl3, what coefficients would balance the equation?
a) 2, 3, 2
b) 3, 2, 2
c) 4, 2, 2
d) 1, 1, 1
How many oxygens are in 2(NO3)
a) 6
b) 2
c) 3
d) 1
How many aluminums are in 2Al2O3
a) 4
b) 2
c) 6
d) 8
What is a coefficient in a chemical equation?
a) a number preceding an elemental or molecular symbol
b) the subscript after an atomic symbol
c) a number following an elemental or molecular symbol
d) a subscript before an atomic symbol
MgO
a) Magnesium Oxide
b) Manganese Oxide
c) Magnesium monoxide
d) Monomanganese monoxide
CaSO4
a) Calcium sulfate
b) Calcium monosulfur tetraoxide
c) Calcium sulfite
d) calcium hydrogen sulfate
FeCl3
a) Iron (III) Chloride
b) monoiron trichloride
c) Iron trichloride
d) Iron chloride
K2O
a) potassium oxide
b) dipotassium monoxide
c) Potassium monoxide
d) Potassium oxalate
CO2
a) carbon dioxide
b) monocarbon dioxide
c) carbon oxide
d) carbide oxide
Sodium nitrite is
a) NaNO3
b) NaNO2
c) NaNO
d) Na3N
Copper (II) sulfide is
a) CuS
b) CuS2
c) Cu2S2
d) Cu2S
What is the correct name of CrPO4
a) Chromium (III) phosphate
b) Chromium (III) phosphite
c) Chromium (II) phosphide
d) Chromium (II) phosphate
The formula for calcium bromide is
a) CaBr2
b) CaBr
c) Ca2Br
d) Ca2Br2
If your cation is a transition metal, it should have a
a) roman numeral
b) subscript
c) polyatomic ion
d) prefix
What does the law of conservation of mass state?
a) The total mass of the reactions equals the total mass of the products.
b) Mass can be created but not destroyed
c) The total mass of the reactions is less than the total mass of the products.
d) The total mass of the reactants is greater than the total mass of the products.
Which of the following equations does NOT demonstrate the law of conservation of mass?
a) P4 + 5O2 = 2P4O10
b) NaOH + HCl = NaCl H20
c) 2Na + Cl2 = 2NaCl
d) 2K + 2Cl = 2KCl
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