Balancing Equations
2 years ago
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20 QuestionsShow answers
  • Question 1
    60 seconds
    Q. Balance this equation:
    MgCl2 --> Mg4+ Cl2
    answer choices
    It's already balanced.
    4MgCl2 --> Mg4+ 4Cl2
    4MgCl2 --> Mg4+ 5Cl2
  • Question 2
    60 seconds
    Q. Balance this equation:
     2Li + Cl2 -> LiCl
    answer choices
    2Li + Cl2 -> 4LiCl2
    2Li + Cl2 -> LiCl2
    2Li + Cl2 -> 2LiCl
  • Question 3
    60 seconds
    Q. The substances listed on the left side of a chemical equation are the
    answer choices
    Products
    Coefficients
    Precipitates
    Reactants
  • Question 4
    60 seconds
    Q. In chemical reactions, what does the principle of conservation of mass mean?
    answer choices
    Matter is not created or destroyed.
    The total mass of the reactants is greater than the total mass of the products.
    The total mass of the reactants is less than the total mass of the products.
    Matter is not changed.
  • Question 5
    60 seconds
    Q. How many Hydrogen (H) atoms are in NH3O5
    answer choices
    3
    4
    5
    1
  • Question 6
    60 seconds
    Q. Name the part in red:

    H2 + O2 -> H2O
    answer choices
    Coefficient
    Product
    Yield
    Subscript
  • Question 7
    60 seconds
    Q. Name the part in red:

    _2_H+ _1_O2 -> _2_H2O
    answer choices
    Coefficient
    Product
    Yield
    Subscript
  • Question 8
    60 seconds
    Q. Name the part in red:

    H+ O2 -> H2O
    answer choices
    Coefficient
    Product
    Reactant
    Subscript
  • Question 9
    60 seconds
    Q. Name the part in red:

    H+ O-> H2O
    answer choices
    Coefficient
    Product
    Reactant
    Subscript
  • Question 10
    120 seconds
    Q. How many phosphorus atoms are in PO4?
    answer choices
    1
    2
    3
    4
  • Question 11
    120 seconds
    Q. Which number should go in the blank?
    _ H2 + O2 -> 2 H2O
    answer choices
    1
    2
    3
    0
  • Question 12
    120 seconds
    Q. Is the following equation balanced or unbalanced ? 
    Al + O2 --> Al2O3
    answer choices
    Balanced
    Unbalanced
  • Question 13
    120 seconds
    Q. Is the following equation balanced or unbalanced ? 
    N2 +3 H2 --> 2NH3
    answer choices
    Balanced
    Unbalanced
  • Question 14
    60 seconds
    Q. How many hydrogens are in 4H2O?
    answer choices
    6
    8
    2
    4
  • Question 15
    60 seconds
    Q. Read the following chemical formula: C6H12O6. How many hydrogen atoms are in the formula?
    answer choices
    12
    6
    4
  • Question 16
    60 seconds
    Q. How many atoms of aluminum are on each side of the following equation: 4Al + 3O--> 2AlO3
    answer choices
    2
    6
    1
    4
  • Question 17
    120 seconds
    Q. What are the coefficient used to balance the equation below?
    __Ag2O →__ Ag +___O2
    answer choices
    2,4,1
    1,1,1
    2,1,2
    2,2,2
  • Question 18
    60 seconds
    Q. How many Oxygen atoms are in 4H2O?
    answer choices
    4
    1
    0
    8
  • Question 19
    120 seconds
    Q.  Balance this equation:

    __ Al + __ HCl → __ H
    2 + __ AlCl3
    answer choices
    2, 6, 3, 2
    it is already balanced
    4, 12, 3, 4
    2, 1, 4, 5
  • Question 20
    60 seconds
    Q. Is this balanced?
    Al + O2 → 2Al2O3
    answer choices
    Yes
    No
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