• 1. 
    Three elements, X, Y and Z have consecutive increasing proton numbers. If element Y is a noble gas, what will be the formula of the compound formed by X and Z?

  • ZX
  • ZX7
  • Z7X
  • Z2X
  • 2. 
    The diagram below shows the arrangement of ions in a compound. Which is the simplest formula of this compound?

  • M2X
  • MX
  • MX2
  • MX6
  • 3. 
    Two elements X and Y, have electronic configurations 1s22s22p63s2 and 1s22s22p63s23p5 respectively.Which statements describe the compound formed by X and Y?I : It is soluble in waterII : It has high melting and boiling pointsIII : It has a crystal lattice structure.IV : The elements can be recovered by using electricity.

  • I and II only
  • I, II and III only
  • II, III and IV only
  • I, II, III and IV
  • 4. 
    Which is a compound that has giant molecular structure?

  • carbon dioxide
  • sulfur dioxide
  • graphite
  • silicon dioxide
  • 5. 
    Both calcium chloride and potassium chloride are ionic compounds.Which statements about these compounds are correct?

  • 1 and 2
  • 1 and 3
  • 2 only
  • 3 only
  • 6. 
    Solid iron metal, aqueous zinc sulfate, solid graphite and molten magnesium oxide will all conduct electricity.Which pair will conduct electricity because they contain mobile ions?

  • aqueous zinc sulfate and molten magnesium oxide
  • solid iron metal and aqueous zinc suflate
  • solid iron metal and aqueous zinc sulfate
  • solid graphite and molten magnesium oxide
  • 7. 
    An ionic bond forms when atoms ___________ electrons.

  • gain
  • share
  • increase
  • transfer
  • 8. 
    Which category of elements usually form negative ions?

  • metals
  • nonmetals
  • metalloids
  • noble gases
  • 9. 
    If I was trying to determine if two atoms will bond, what would be helpful to know:

  • Valence electrons, found by group number
  • Whether the elements are metals or nonmetals
  • The electronegativity of the atoms
  • All of the above, all of which can be found on the Periodic Table
  • 10. 
    What usually forms the positive ion?

  • Metal
  • Nonmetals
  • None
  • 11. 
    What is the number of valence electrons for Neon and other Noble Gases besides Hydrogen?

  • 5
  • 6
  • 7
  • 8
  • 12. 
    The name of Cu₃N₂ is

  • copper (III) nitride
  • copper (II) nitride
  • copper nitride
  • tricopper dinitride
  • 13. 
    An element X reacts with chlorine to form a solid of formula XCl. What could be the electronic structure of X?

  • 1s2 2s2 2p4
  • 1s2 2s2 2p6 3s1
  • 1s2 2s2 2p6 3s2
  • 1s2 2s2 2p6 3s2 3p5
  • 14. 
    What is the number of valence electrons for Oxygen?

  • 8
  • 6
  • 2
  • 1
  • 15. 
    Which compound would have a very low melting point?

  • sodium chloride
  • copper (II) sulfate
  • sulfur dioxide
  • aluminum
  • 16. 
    13. What elements generally make a covalent bond?

  • metal and nonmetal
  • 2 or more nonmetals
  • metal
  • none of the above
  • 17. 
    Which of the following has a full valence shell?

  • Oxygen
  • Neon
  • Barium
  • Carbon
  • 18. 
    What is the molecular shape of the following?

  • Bent
  • Linear
  • SeeSaw
  • Octahedral
  • 19. 
    What type of bond is this? Lithium with Fluorine?

  • ionic
  • covalent
  • 20. 
    What molecule could this be?

  • BF3
  • CH4
  • H2O
  • CO2
  • 21. 
    Is this molecule polar or nonpolar?

  • polar
  • nonpolar
  • 22. 
    Which of the following is the correct Lewis structure for the compound PBr3?

  • structure A
  • structure B
  • structure C
  • structure D
  • 23. 
    What is a valence electron?

  • an electron that is found in the outermost shell of an atom.
  • an electron found in the innermost shell of an atom.
  • an electron found in the middle shell.
  • All of above
  • 24. 
    Using electronegativities, what type of bond is formed by S and Br.

  • ionic
  • polar covalent
  • non-polar covalent
  • 25. 
    Carbonate (CO32-) has how many double bonds?

  • 0
  • 1
  • 2
  • 3
  • 26. 
    A solid substance is an excellent conductor of electricity. The chemical bonds in this substance are most likely?

  • ionic, because the valence electrons are shared between atoms
  • covalent, because the valence electrons are mobile
  • metallic, because the valence electrons are stationary
  • metallic, because the valence electrons are mobile
  • 27. 
    When you have H-Cl atoms, what is the polarity?

  • nonpolar
  • polar
  • ionic
  • 28. 
    What is the shape of this molecule?

  • Linear
  • Bent
  • Tetrahedral
  • Trigonal Pyramidal
  • 29. 
    What charge would a potassium (K) ion have?

  • +1
  • -1
  • +2
  • -2
  • 30. 
    What is the electron configuration of beryllium?

  • 2.2
  • 2.4
  • 4
  • 6
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