Year 9 Chemistry Revision 9d

15 Questions | Total Attempts: 181

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9th Grade Chemistry Quizzes & Trivia

Chemistry is one of the most difficult subjects in school. With proper revision and study it becomes easy. If you are in year 9, take up the quiz below and see how good you are. All the best.


Questions and Answers
  • 1. 
    To determine the number of neutrons you must:
    • A. 

      Subtract the atomic weight from the atomic number

    • B. 

      Add the atomic weight to the atomic number

    • C. 

      Subtract the atomic number from the atomic weight

    • D. 

      Add the atomic number to the atomic weight

  • 2. 
    Carbon dioxide is a molecule and a compound.
    • A. 

      True

    • B. 

      False

  • 3. 
    The atomic number of an atom represents the number of:
    • A. 

      Protons and electrons

    • B. 

      Protons and neutrons

    • C. 

      Neutrons and electrons

    • D. 

      Neutrons and nucleus

  • 4. 
    Oxygen has:
    • A. 

      10 electrons, 10 protons and 10 neutrons

    • B. 

      8 electrons, 8 protons and 9 neutrons

    • C. 

      8 electrons, 10 protons and 10 neutrons

    • D. 

      8 electrons, 8 protons and 8 neutrons

  • 5. 
    An atom is the ____________ particle.
  • 6. 
    Select which best represent H2. You can choose more than one.
    • A. 

      Molecule

    • B. 

      Atom

    • C. 

      Element

    • D. 

      Compound

  • 7. 
    Which is the correct Chloride (Cl) ion?
    • A. 

      Cl+

    • B. 

      Cl2+

    • C. 

      Cl-

    • D. 

      Cl2-

  • 8. 
    What is the correct name for this ionic compound (NH4)2CO3?
    • A. 

      Ammonium trioxide

    • B. 

      Nitrogen carbonate

    • C. 

      Ammonium carbonate

    • D. 

      Nitrohydrogen carbonate

  • 9. 
    What is the correct formula for Potassium iodide?
    • A. 

      K2I2

    • B. 

      KI

    • C. 

      K2I

    • D. 

      KI2

  • 10. 
    Reactants are the chemicals at the beginning of a chemical reaction?
    • A. 

      True

    • B. 

      False

  • 11. 
    Ice defrosts. Is this a chemical or physical change?
  • 12. 
    Hydrogen and chloride combine to give hydrochloric acid. Write the word equation.