Endothermic, Exothermic & Rates Of Reaction

8 Questions | Total Attempts: 867

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Thermodynamics Quizzes & Trivia

Questions and Answers
  • 1. 
    What does exothermic mean ?
    • A. 

      Releasing heat

    • B. 

      Absorbing heat

    • C. 

      Producing heat

  • 2. 
    Is melting an endothermic reaction ?
    • A. 

      Yes

    • B. 

      No

    • C. 

      Option 4

  • 3. 
    What is a catalyst ?
    • A. 

      A chemical that changes while speeding up the rate of reaction

    • B. 

      A chemical to slow down the rate of reaction

    • C. 

      A chemical that speeds up the rate of a reaction without being changed in the process.

    • D. 

      A chemical that reacts to form a new product while speeding up the rate of reaction

  • 4. 
    Why does the hull of an ocean going ship rust quickly ?
    • A. 

      Because the ocean going ship is always in the sea water

    • B. 

      Because the sea water speeds up the reaction of the iron rusting

    • C. 

      Because the iron's quality is bad

  • 5. 
    Why does the rate of reaction speed up when it is heated ? Use the particle theory to explain.
    • A. 

      Because increasing the temperature makes the particles become bigger and so it can touch other particles more quickly and react.

    • B. 

      Because increasing temperature gives particles more energy. When particles moves faster, it increases the chances of collision and collisions are harder.

    • C. 

      Because increasing the temperature causes the particles to rise quickly.

  • 6. 
    A lump of iron reacts faster than powdered iron. Is it true or false ?
    • A. 

      True

    • B. 

      False

  • 7. 
    Why does a metal with a bigger surface area react faster than a metal with a smaller surface area ?
    • A. 

      Because more particles are exposed to collision with other particles causing a faster rate of reaction.

    • B. 

      Because the particles can move about more freely to collide causing a faster reaction.

    • C. 

      Because less particles are exposed to collision with other particles causing a faster rate of reaction.

  • 8. 
    What are the factors affecting the rate of reaction ?
    • A. 

      Concentration

    • B. 

      Density

    • C. 

      Catalsyts

    • D. 

      Mass

    • E. 

      Surface Area

    • F. 

      Temperature

    • G. 

      Volume

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