Quiz  /  Chemical Bonding Class 12 MCQ Questions With Answers

  • 1. 
    A compound forms between a metal and a nonmetal. It is

  • ionic
  • metallic
  • covalent

  • 2. 
    Why do bonds form?

  • To fill the valence shell of electrons for the elements involved
  • to release energy stored in the bonds
  • because whenever you mix two chemicals, there will be a reaction
  • because of attraction

  • 3. 
    A substance which has a high melting point, conducts electricity when dissolved in water, and has a crystalline structure probably has what type of bond?

  • Ionic
  • Metallic
  • Covalent
  • Crystalline

  • 4. 
    Relatively soft

  • Ionic
  • Covalent

  • 5. 
    High Melting & Boiling Points

  • Ionic
  • Covalent

  • 6. 
    A mixture of two or elements at least one of which is a metal is called

  • an ion
  • an alloy
  • steel
  • a crystal

  • 7. 
    Bonds formed by sharing electrons between atoms are

  • ionic
  • metallic
  • covalent
  • dipole-dipole

  • 8. 
    What happens when an atom loses an electron?

  • It becomes Negatively Charged
  • It remains neutral because the proton also leaves.
  • It becomes Positively Charged
  • It stays the same.

  • 9. 
    ________ molecules are found in nature as single atom elements

  • polyatomic
  • monatomic
  • elemental
  • diatomic

  • 10. 
    Which of the following can exist in monatomic form?

  • Oxygen
  • Copepr
  • Sodium
  • Argon

  • 11. 
    The number of _____ is most important in determining how an atoms will bond.

  • Neutrons
  • Protons
  • Valence Electrons
  • Electron sin the innermost shell

  • 12. 
    A compound that is a poor conductor and has low melting and boiling points is most likely

  • ionic
  • metallic
  • covalent

  • 13. 
    Which of the following types of elements can exist in monatomic form?

  • alkali metals
  • transition metals
  • halogens
  • noble gases

  • 14. 
    Ionic compounds are held together by

  • intermolecular forces
  • electrostatic forces
  • magnetic forces
  • nuclear forces

  • 15. 
    Soluble in Water

  • Ionic
  • Covalent

  • 16. 
    There are 4 different types of subshells s,p,d,f

  • true
  • false

  • 17. 
    Predict the bond that will form between Be and F.

  • Ionic
  • Covalent

  • 18. 
    What elements generally make a covalent bond?

  • metal and nonmetal
  • 2 nonmetals
  • metal
  • none of the above

  • 19. 
    If an oxygen atom has 8 protons (+) and 10 electrons (-), what is it's charge?

  • O10-
  • O8+
  • O2-
  • O10+

  • 20. 
    Covalent bonds are between...

  • Metal and Non-metal
  • Non-metal and Non-metal
  • Metal and Metal

  • 21. 
    An ionic compound made of copper (Cu2+) and oxygen would be named

  • copper oxygen.
  • copper oxide.
  • dicopper oxide.
  • copper(II) oxide.

  • 22. 
    What is the formula for aluminum fluoride?

  • AlF
  • Al2F3
  • AlF3
  • Al3F2

  • 23. 
    When naming ionic compounds with transition metals you need to include roman numerals to show the _____ of the metal..

  • atomic number
  • mass number
  • charge
  • ionization energy

  • 24. 
    Do ionic bonds share or transport electrons?

  • Share
  • Transport

  • 25. 
    What does the prefix tetra mean?

  • 1
  • 2
  • 3
  • 4

  • 26. 
    The name of FeCl₂ is

  • iron chloride
  • iron (II) chloride
  • iron (I) chloride
  • iron dichloride

  • 27. 
    What is the formula for silicon dioxide?

  • SO2
  • NaO2
  • SiO2
  • SiO

  • 28. 
    The chemical formula of potassium iodide is

  • KI
  • PI
  • KI₂
  • K₂I

  • 29. 
    When an atom loses an electron, it is called a..

  • crystal
  • formula
  • ion
  • None of these

  • 30. 
    The chemical bond formed when two atoms share electrons is called a(n)

  • ionic bond.
  • orbital bond.
  • Lewis structure.
  • covalent bond.
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