Year 8 Chemistry Revision Quiz - Medium To Hard Questions

10 Questions | Total Attempts: 4753

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Year 8 Chemistry Revision Quiz - Medium To Hard Questions

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Questions and Answers
  • 1. 
    Identify the type of reaction: N2 + H2 -----> NH3
    • A. 

      Combination

    • B. 

      Precipitation

    • C. 

      Decomposition

    • D. 

      Combustion

  • 2. 
      Identify the type of reaction: H2O ---> 2H2 + O2    
    • A. 

      Combination

    • B. 

      Precipitation

    • C. 

      Decomposition

    • D. 

      Combustion

  • 3. 
      Identify the type of reaction: AgCl + BaBr2 ----> AgBr + BaCl2      
    • A. 

      Combination

    • B. 

      Precipitation

    • C. 

      Decomposition

    • D. 

      Combustion

  • 4. 
    This is a diagram of which element?
    • A. 

      C

    • B. 

      He

    • C. 

      Na

    • D. 

      Au

  • 5. 
    This is a diagram of which element?
    • A. 

      O

    • B. 

      Mg

    • C. 

      Na

    • D. 

      Ag

  • 6. 
    How many carbon and oxygen atoms does a CO2 molecule contain?
    • A. 

      2 oxygen atoms and 2 carbon atoms

    • B. 

      2 oxygen atoms and 1 carbon atom

    • C. 

      1 carbon atom and 1 oxygen atom

  • 7. 
    Look carefully at this diagram of the atoms in some substances.  Which letter represents a mixture of elements?
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

    • E. 

      E

    • F. 

      F

  • 8. 
    Little Jonny is doing an experiment. He notices after mixing two liquids that his new solution is becoming cloudy?? Little Jonny is like 'Yo whats going on here?!' - give little Jonny a tip to help him understand what is going on....
    • A. 

      "Hey Jonny, I think your observation could be evidence of a combustion reaction"

    • B. 

      "Hey Jonny, I think your observation could be evidence of a decomposition reaction"

    • C. 

      "Hey Jonny, I think your observation could be evidence of a precipitation reaction"

    • D. 

      Sorry Johnny no idea!

  • 9. 
    Little Jonny is doing an experiment. He notices after mixing two chemicals that his new solution is bubbling. Little Jonny is like 'Yo whats going on here?!' - give little Jonny a tip to help him understand what is going on....
    • A. 

      "Hey Jonny, bubbles is evidence of a precipitation reaction"

    • B. 

      "Hey Jonny, your observation means that a gas is being produced"

    • C. 

      "Hey Jonny, bubbles is evidence of a physical change"

    • D. 

      Sorry Johnny no idea!

  • 10. 
    Little Jonny has permission from his teacher to test the gas product with a match. When he does this, a high pitch pop sound is heard with a flash of light! "wow" says LIttle Jonny "What type of chemical reaction was that?!" Help Litte Jonny out. Which statement is the MOST correct?
    • A. 

      "Hey Jonny, that pop sound was the sound of compounds breaking down in a decomposition reaction"

    • B. 

      "Hey Jonny, when you burn something you see a release of energy in the form of light and heat, this should tell you that it is a combustion reaction"

    • C. 

      "Hey Jonny, when you burn something you use the surrounding oxygen gas as a reactant which combines with your other reactant. A sudden release of energy in the form of light, sound and heat (pop) is observed and all of this is characteristic of a combustion reaction"

    • D. 

      "Sorry Johnny no idea!"

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