Chemistry Trivia Quiz On Atoms And Molecules!

15 Questions | Total Attempts: 34

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Chemistry Trivia Quiz On Atoms And Molecules!

Are you looking for a chemistry trivia questions quiz on atoms and molecules? Atoms are building blocks of matter, and they join together to form molecules. They are made up of neutrons, protons, and electrons, which have a function to meet. A compound can be formed when molecules of different atoms are combines. See what else you know about these two by taking the quiz.


Questions and Answers
  • 1. 
    If 92.6g of mercury reacts with 7.4g of oxygen then what will be the mass of mercuric oxide?
    • A. 

      100g

    • B. 

      92.4g

    • C. 

      7.4g

    • D. 

      7g

  • 2. 
    If 8.4g of magnesium carbonate on heating gave 4.4g of carbon dioxide and 4.0g of magnesium oxide. These agreement are in agreement with______________
    • A. 

      Law of constant proportion

    • B. 

      Law of conservation of mass

    • C. 

      Law of multiple proportion

    • D. 

      Gay lussac's law

  • 3. 
    Which of the following is one of the drawbacks of dalton's atomic theory?
    • A. 

      Matter is made up of atoms

    • B. 

      Atoms are indivisible

    • C. 

      Atom is neither created nor destroyed

    • D. 

      An element consists of only one type of atoms

  • 4. 
    The molecular mass of ozone is
    • A. 

      32 u

    • B. 

      16 u

    • C. 

      54 u

    • D. 

      48 u

  • 5. 
    What is the symbol of sodium and copper?
    • A. 

      N and C respectively

    • B. 

      S and C respectively

    • C. 

      Na and Cu respectively

    • D. 

      Na and Co respectively

  • 6. 
    The number of atoms present in a molecule of a substance is
    • A. 

      Molecularity

    • B. 

      Atomicity

    • C. 

      Valency

    • D. 

      Reactivity

  • 7. 
    What is the valency of carbon in carbon dioxide
    • A. 

      2

    • B. 

      1

    • C. 

      4

    • D. 

      3

  • 8. 
    The atomic weight of nitrogen is 14. It means that
    • A. 

      It is 14 times heavier than hydrogen atom d) None of the above Mass of Nitrogen is 14 gram

    • B. 

      It is 14 times heavier than carbon-12 atom

    • C. 

      It is of is grams

    • D. 

      None of the above

  • 9. 
    Name the scientist who gave the atomic theory of matter
    • A. 

      Albert Einstein

    • B. 

      John Dalton

    • C. 

      James Chadwick

    • D. 

      Neils Bohr

  • 10. 
    Magnesium and oxygen combine in the ratio of 3:2 by mass to form magnesium oxide. What mass of oxygen gas would be required to react completely with 24 grams of magnesium?
    • A. 

      16 g b) 45 g c) 12 g d) 19 g 16g

    • B. 

      45 g

    • C. 

      12 g

    • D. 

      19 g

  • 11. 
    The smallest atom of all is _________.
    • A. 

      C

    • B. 

      H

    • C. 

      Cu

    • D. 

      Na

  • 12. 
    The value of Avogadro number is _______________.
    • A. 

      9.022 x 10^23 ( ^ = THESE SYMBOL INDICATES TO THE POWER )

    • B. 

      6.022 X 10^23

    • C. 

      12.44 X 10^23

    • D. 

      3.011 X 10^23

  • 13. 
    1 mole = ___________ mass of element.
    • A. 

      Kilogram

    • B. 

      Metre

    • C. 

      Gram atomic

    • D. 

      None of this these

  • 14. 
    What is the valency of nitrogen in ammonia (NH3 )
    • A. 

      3

    • B. 

      4

    • C. 

      2

    • D. 

      1

  • 15. 
    What is the formula of lithium nitride
    • A. 

      LiN

    • B. 

      (LI2)3 N

    • C. 

      Li2N

    • D. 

      Li3N