Steps Of Balancing Equations Quiz

9 Questions | Total Attempts: 1552

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Steps Of Balancing Equations Quiz

A simple way to learn: practicing!  By applying the Law of conservation of mass it is easy to have any chemical equation balanced!  A few rules and everything is possible!


Questions and Answers
  • 1. 
    What happens in a chemical reaction?
    • A. 

      Atoms are destroyed

    • B. 

      Atoms are created

    • C. 

      Atoms are rearranged

    • D. 

      Atoms are heated or cooled

  • 2. 
    a ssa     A substance that undergoes a change in a chemical reaction is
    • A. 

      A product

    • B. 

      A chemical

    • C. 

      A reactant

    • D. 

      An enzyme

  • 3. 
                   A chemical equation is balanced by changing or adding
    • A. 

      Chemical symbols

    • B. 

      Subscripts

    • C. 

      Coefficients

    • D. 

      Reactants

  • 4. 
                   A balanced chemical equation shows the proportions of reactants and products necessary for
    • A. 

      The reaction to occur

    • B. 

      Mass to be conserved.

    • C. 

      Energy use to be minimized.

    • D. 

      Electrolysis to occur.

  • 5. 
    If you start with 5 mol of O2 in the reaction 2Mg + O2 ----> 2MgO, how many moles of Mg will you need?
    • A. 

      4

    • B. 

      5

    • C. 

      8

    • D. 

      10

  • 6. 
    What coefficients will satisfy the following equation Hg  +  O2  ---->  HgO                                      
    • A. 

      1,1,1

    • B. 

      2,2,1

    • C. 

      2,1,2

    • D. 

      1,2,2

  • 7. 
    What coefficients will satisfy the following equation AgNO3  +  NaCl  ---->  AgCl   +   NaNO                     
    • A. 

      2,2,2,1

    • B. 

      1,1,1,1

    • C. 

      1,2,1,2

    • D. 

      2,1,2,1

  • 8. 
    What coefficients will satisfy the following equation Al  + O2  --> Al2O3
    • A. 

      1,3,2

    • B. 

      4,3,2

    • C. 

      2,2,2

    • D. 

      2,1,3

  • 9. 
    What coefficients will satisfy the following equation H2 + O2 --->  H2O
    • A. 

      2,2,1

    • B. 

      2,1,2

    • C. 

      4,1,2

    • D. 

      2,2,2