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Balancing Equations Quiz - 4th period
4 days ago by
weigand_90816
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  • Question 1
    300 seconds
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    Q. Balance this equation...
    HgO --> 2Hg + O2
    answer choices
    It is balanced 
    2HgO --> Hg + O2
    2HgO --> 2Hg + O2
  • Question 2
    300 seconds
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    Q.

    Balance this equation...

    Sb2S3 + O2 --> Sb + SO2

    answer choices

    It is balanced

    Sb2S3 + 3O2 --> 2Sb + 3SO2

    Sb2S3 + O2 --> 2Sb + SO2

    What is Sb?

  • Question 3
    300 seconds
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    Q. Which of the following shows the correct way to balance the chemical equation?
    Fe + O2 -> Fe2O3
    answer choices
    4Fe + 3O2 -> 2Fe2O3
    2 Fe + 3O2 -> Fe2O6
    4 Fe + O6 -> 2Fe2O3
    None of the options are correctly balanced.
  • Question 4
    300 seconds
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    Q.

    Which of the following correctly balances this equation:

    Sodium phosphate and potassium hydroxide will produce sodium hydroxide and potassium phosphate.

    answer choices

    1 Na3PO4+3 KOH

    --->

    3 NaOH + 1 K3PO4

    2 Na3PO4+2 KOH

    --->

    3 NaOH + 1 K3PO4

    1 S3PO4+3 SOH

    --->

    3 SOH + 1 K3PO4

    3 Na3P+3 KO2H

    --->

    3 NaH2O + 1 K3P

  • Question 5
    300 seconds
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    Q.

    What coefficient belongs with HCl?

    Mg + ___ HCl → MgCl2 + H2

    answer choices

    1

    2

    3

    4

  • Question 6
    300 seconds
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    Q. Balance this equation:
     2Li + Cl2 -> LiCl
    answer choices
    2Li + Cl2 -> 4LiCl2
    2Li + Cl2 -> LiCl2
    2Li + Cl2 -> 2LiCl
  • Question 7
    300 seconds
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    Q.

    Which coefficients will correctly balance this equation:

    _Al +_HCl --> _H2 +_AlCl3

    answer choices

    2, 6, 3, 2

    it is already balanced

    4, 12, 3, 4

    2, 1, 4, 5

  • Question 8
    300 seconds
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    Q.

    Choose the coefficients that will correctly balance this equation.

    _CH4 + _O2 --> _CO2 + _H2O

    answer choices

    1,2,1,1

    2,1,2,1

    1,2,1,2

    0,2,0,2

  • Question 9
    300 seconds
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    Q. What is the left part of a chemical equation called...
    H2 + O --> H2O
    answer choices
    Reactants
    Products 
    Yields 
    Chemical Equation 
  • Question 10
    300 seconds
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    Q. KClO3 --> KCl + O2
    What coefficient would go in front of KCl?
    answer choices
    1
    2
    3
    4
  • Question 11
    300 seconds
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    Q. BaF2 + K3PO4 --> Ba3(PO4)2 + KF
    What coefficient goes in front of K3PO4?
    answer choices
    1
    2
    3
    4
  • Question 12
    300 seconds
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    Q.

    Which type of chemical reaction forms Carbon Dioxide and Water?

    answer choices

    Double Replacement

    Single Replacement

    Combustion

    Decomposition

  • Question 13
    300 seconds
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    Q. Name this reaction:  2Ca + O2 --> 2CaO
    answer choices
    Decomposition
    Synthesis
    Double Replacement
    Combustion
  • Question 14
    300 seconds
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    Q. Balance this equation:
    ___NH3 + ___O2 --> ___NO + ___H2
    answer choices
    4NH3 + 5O2 --> 4NO + H2O
    It's already balanced. 
    4NH3 + 5O2 --> 4NO + 6H2
  • Question 15
    300 seconds
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    Q. ____ P4 + ____ O2 --->____ P2O3
    answer choices
    1,3,2
    1,1,1
    1,2,3
    2,1,2
  • Question 16
    300 seconds
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    Q. Which type of reaction is:
    2 NaBr + Ca(OH)2 → CaBr2 + 2 NaOH
    answer choices
    Synthesis
    Single Displacement
    Double Displacement
    Combustion
  • Question 17
    300 seconds
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    Q. Fill in the blanks with coefficient:
    PCl5+_ H2O→_ HCl+H3PO4
    answer choices
    4, 5
    1, 6
    3, 8
    2,2
  • Question 18
    300 seconds
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    Q. The red numbers in the image below represent ________
    answer choices
    subscripts
    coefficients
    I don't know, and don't want to try
    None of the answers are correct
  • Question 19
    300 seconds
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    Q. How many O's are in Al₂(SO₄)₃
    answer choices
    4
    12
    7
    24
  • Question 20
    300 seconds
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    Q.

    What is the right part of a chemical equation called...

    H2 + O2 --> H2O

    answer choices

    Reactants

    Products

    Yields

    Chemical Equation

  • Question 21
    300 seconds
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    Q.

    What is the arrow in a chemical equation...

    H2 + O2 --> H2O

    answer choices

    Reactants

    Products

    Yields

    Chemical Equation

  • Question 22
    300 seconds
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    Q. What is the little number after an element in a chemical equation called.
    Example: H2
    answer choices
    Coefficient 
    Subscript
    Atom
    Equation
  • Question 23
    300 seconds
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    Q.

    What do the elements oxygen, hydrogen, and chlorine have in common?

    answer choices

    all are metals

    all exist as diatomic moolecules

    all have positive charge numbers

    all give electrons to satisfy the octet rule

  • Question 24
    300 seconds
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    Q.

    What is meant by a "diatomic molecule?

    answer choices

    It is an atom that always has a coefficient of 2 in a balanced equation

    it is an element that always has a plus 2 charge

    it is a compound that has two elements only

    it is when two atoms of the same element pair up to satisfy the octet rule

  • Question 25
    300 seconds
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    Q.

    In a decomposition reaction...

    answer choices

    a more complex substance, like a compound, is broken into smaller parts

    two or more polyatomic ions are combined to compose a more complex molecule

    ionic bonds are broken and reformed as covalent bonds

    two single atoms are combined to make a compound

  • Question 26
    300 seconds
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    Q.

    The law of conservation of mass states...

    answer choices

    the coefficients in a balanced equation must be the same on both sides of the arrow

    that matter cannot be created nor destroyed

    the charge must be conserved from the reactants to the products

    subscripts in chemical formulas must all be equal

  • Question 27
    300 seconds
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    Q. How many HCl molecules do you need to balance this equation? 
    Mg +  __HCl --->  MgCl2 + H2
    answer choices
    1
    2
    3
    4
  • Question 28
    300 seconds
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    Q.

    How many oxygens are in the following?

    3Pb(OH)4

    answer choices

    1

    3

    4

    12

  • Question 29
    300 seconds
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    Q.

    What are the numbers that you CANNOT change in a chemical equation?

    answer choices

    Coefficients

    Products

    Reactants

    Subscripts

  • Question 30
    300 seconds
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    Q. Balance this equation
    _Zn+_HCl-->_ZnCl+_H2
    answer choices
    1,1,2,1
    1,1,1,2
    1,2,1,1
    2,1,1,1
  • Question 31
    300 seconds
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    Q. Which problem is balanced?
    answer choices
    PbO2 + 2H2
    SO2 + H20 --> H2SO4
    2Na + 2H2O --> 2NaOH + H2
  • Question 32
    300 seconds
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    Q.

    What type of chemical reaction is this?

    2Fe + 3O2 --> 2Fe2O3

    answer choices

    synthesis

    decomposition

    single replacement

    double replacement

  • Question 33
    300 seconds
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    Q.

    What is meant by a chemical change?

    answer choices

    it is when atoms are chemically altered by losing/gaining electrons

    the ability of a substance to combine with or change into a different substance

    a process in chemical equations where protons are changed into neutrons

  • Question 34
    300 seconds
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    Q.

    Which of the following is NOT an indication that a chemical change has taken place?

    answer choices

    light is produced

    there is a change in color

    a change from a solid to a liquid

  • Question 35
    300 seconds
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    Q.

    In order for a chemical reaction to occur atoms or molecules must collide with enough energy so that...

    answer choices

    bonds are broken

    light is absorbed

    energy is formed

    protons change into neutrons

  • Question 36
    300 seconds
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    Q.

    The arrow in a balanced equations means...

    answer choices

    yields

    adding

    heat

    energy

  • Question 37
    300 seconds
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    Q.

    What is the expression for this balanced equation in words? Al2(SO4)3 + BaCl2 ----> AlCl3 + BaSO4

    answer choices

    aluminum sulfide an barium chlorine yield aluminum chlorate and barium sulfate

    aluminum sulfate and barium chloride yields aluminum chloride and barium sulfate

    aluminum sulfide and barium chlorate yields aluminum III chloride and barium II sulfide

    aluminum sulfite and barium chloride yields aluminum chlorate and barium sulfite

  • Question 38
    300 seconds
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    Q.

    AB ----> A + B is the general form of a __ reaction

    answer choices

    decomposition

    synthesis

    double replacement

    single replacement

  • Question 39
    300 seconds
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    Q.

    AX + BY -------> AY + BX is the general form for a ___ reaction.

    answer choices

    decomposition

    synthesis

    single replacement

    double replacement

  • Question 40
    300 seconds
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    Q. Balance the equation:
    Si(OH)4+NaBr-->
     SiBr4+NaOH
    answer choices
    Si(OH)4+2NaBr--> SiBr4+NaOH
    Si(OH)4+4NaBr--> SiBr4+4NaOH
    Si(OH)4+NaBr--> SiBr4+4NaOH
    Si(OH)4+2NaBr--> SiBr4+2NaOH
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