Chemical Equations And Reactions

16 Questions | Total Attempts: 171

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Equation Quizzes & Trivia

This quiz is a review for the unit exam. If you do well on this, you will pass the exam.


Questions and Answers
  • 1. 
    After the correct formula for a reactant in an equation has been written, the -
    • A. 

      Chemical formula cannot be altered

    • B. 

      Subscripts of the formula are changed to balance the equation

    • C. 

      Chemical symbols in the formula must appear only on the reactant side

    • D. 

      Same chemical formula must be written on the product side of the equation

  • 2. 
    Which equation represents a precipitation reaction?
    • A. 

      Equation A

    • B. 

      Equation B

    • C. 

      Equation C

    • D. 

      Equation D

  • 3. 
    Which of the following reactions involves two or more substances combining to form a new compound?
    • A. 

      Single-replacement reaction

    • B. 

      Synthesis reaction

    • C. 

      Decomposition reaction

    • D. 

      Combustion reaction

  • 4. 
    Which of the following reactions involves one element replacing an element in a compound that is from the same activity series?
    • A. 

      Combustion reaction

    • B. 

      Decomposition reaction

    • C. 

      Single-replacement reaction

    • D. 

      Double-replacement reaction

  • 5. 
    Which of the following reactions involves the ions of two compounds exchanging places to form two new compounds?
    • A. 

      Synthesis reaction

    • B. 

      Single-replacement reaction

    • C. 

      Double-replacement reaction

    • D. 

      Combustion reaction

  • 6. 
    Which of the following reactions involves a single compound producing two or more simpler substances?
    • A. 

      Synthesis reaction

    • B. 

      Decomposition reaction

    • C. 

      Combustion reaction

    • D. 

      Double-replacement reaction

  • 7. 
    By predicting the outcome of the following reactants mixing together in an aqueous solution, what type of reaction will take place?
    • A. 

      Double-replacement reaction

    • B. 

      Synthesis reaction

    • C. 

      Decomposition reaction

    • D. 

      Single-replacement

  • 8. 
    When an acid decomposes, what are the products?
    • A. 

      Non-metal oxides and a salt

    • B. 

      Non-metal oxides and water

    • C. 

      Metal oxides and oxygen

    • D. 

      Metal oxides and peroxide

  • 9. 
    Predict the outcome of the reaction where zinc metal is added to a solution of potassium chloride.
    • A. 

      No reaction occurs

    • B. 

      Gaseous zinc is formed

    • C. 

      Potassium calcide forms

    • D. 

      Zinc chloride forms

  • 10. 
    Predict the products of this reaction.
    • A. 

      Na2CO3

    • B. 

      Na + CO3

    • C. 

      NaCO2 + O2

    • D. 

      NaC + O3

  • 11. 
    Which coefficients are required to correctly balance the equation?
    • A. 

      1,2,3,2

    • B. 

      2,5,4,2

    • C. 

      2,4,5,2

    • D. 

      2,3,5,2

  • 12. 
    According to the law of conservation of matter, the total mass of all the reacting substances is -
    • A. 

      More than the mass of all the products

    • B. 

      More than the total mass of all the products and reactants

    • C. 

      Less than the total mass of all the products

    • D. 

      Equal to the mass of all the products

  • 13. 
    A student performing an investigation of chemical reactions mixes two aqueous solutions and observes a change in color. Color change is most indicative of which type of chemical reaction?
    • A. 

      Neutralization

    • B. 

      Precipitation

    • C. 

      Oxidation-reduction

    • D. 

      Acid-base

  • 14. 
    What would you observe during a precipitation reaction?
    • A. 

      Gas bubbles are produced.

    • B. 

      A solid settles out.

    • C. 

      There is a color change.

    • D. 

      The test tube warms.

  • 15. 
    Which equation represents a neutralization reaction?
    • A. 

      Equation A

    • B. 

      Equation B

    • C. 

      Equation C

    • D. 

      Equation D

  • 16. 
    Write the balanced equation: Sodium hydroxide and chlorine gas yields sodium chloride, sodium hypochlorite, and water.
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