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


Test 3. TEACHERS: click here for quick copy question ID numbers.

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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