Chemistry

11th

grade

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Thermochemistry

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10 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    Any substance that does not conduct electricity when in solution is called a(n) ―

    nonelectrolyte

    electrolyte

    conductor

    semiconductor

  • 2. Multiple Choice
    1 minute
    1 pt
    Image

    The diagram shows what happens when zinc reacts with hydrochloric acid. Which of these best describes the energy transformation that occurs during this reaction?

    Thermal energy - kinetic energy

    Kinetic energy -potential energy

    Chemical energy - thermal energy

    Potential energy - chemical energy

  • 3. Multiple Choice
    30 seconds
    1 pt
    Image

    The potential energy diagram of a reaction is shown. Which statement below is correct relating to this reaction?

    #1 represents the enthalpy change for this exothermic reaction.

    #2 represents the enthalpy change for this endothermic reaction.

    #3 represents the enthalpy change for this endothermic reaction.

    #4 represents the enthalpy change for this exothermic reaction.

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