Lujan Test 3 Balancing Chemical Equation, Conservation Of Matter, Naming Compounds Question Preview (ID: 36233)


Test 3.

Sodium nitrite is
a) NaNO3
b) NaNO2
c) NaNO
d) Na3N

Copper (II) sulfide is
a) CuS
b) CuS2
c) Cu2S2
d) Cu2S

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

FeCl3
a) Iron (III) Chloride
b) monoiron trichloride
c) Iron trichloride
d) Iron chloride

CaSO4
a) Calcium sulfate
b) Calcium monosulfur tetraoxide
c) Calcium sulfite
d) calcium hydrogen sulfate

MgO
a) Magnesium Oxide
b) Manganese Oxide
c) Magnesium monoxide
d) Monomanganese monoxide

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

How many aluminums are in 2Al2O3
a) 4
b) 2
c) 6
d) 8

How many oxygens are in 2(NO3)
a) 6
b) 2
c) 3
d) 1

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

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

Chemical equations illustrate
a) Law of Conservation of Matter
b) Law of Conservation of Energy
c) chemical reactions
d) all of the above

How many atoms does the compound, K2MnO7 contain?
a) 10
b) 11
c) 14
d) 1

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

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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