10 minutes maximum!

An IB Periodic Table is required.

1. Which statement is true for the formation of an ionic bond?
  • A.   Metal atoms share electrons with non-metal atoms
  • B.   Metal atoms transfer electrons to non-metal atoms
  • C.   Non-metal atoms share electrons with non-metal atoms
  • D.   Non-metal atoms transfer electrons to metal atoms
2. What is the correct formula for calcium nitrate?
  • A.   Ca3N2
  • B.   Ca2N3
  • C.   CaNO3
  • D.   Ca(NO3)2
3. Which statement about positive ions is NOT correct?
  • A.   They are smaller than their parent atom
  • B.   They are also known a cations
  • C.   They are isoelectronic with the nearest noble gas
  • D.   They are formed when metal atoms gain electrons
4. Which statement about sodium chloride is NOT correct?
  • A.   It is soluble in water
  • B.   It has a high melting point
  • C.   it is a volatile solid
  • D.   It conducts electricity when molten
5. Which type of structure is formed by an ionic compound?
  • A.   A giant lattice
  • B.   A simple molecule
  • C.   A giant molecule
  • D.   A lattice of positive ions and delocalized electrons

6. Select the diagram which correctly shows the valence electrons in magnesium fluoride.

electrons magnesium fluoride x 4

7. An ionic bond is the electrostatic attraction between ...
  • A.   positive ions and delocalized electrons
  • B.   a shared pair of electrons and the positively charged nuclei
  • C.   polar molecules
  • D.   oppositely charged ions

8. Which row lists the correct formulae for sodium phosphate and sodium sulfate?

  Sodium phosphate Sodium sulfate
A Na3PO4 Na2SO4
B Na3PO4 Na2S
C Na2PO4 Na2SO4
D Na2PO4 Na2S
9. Which statement is NOT true for the formation of potassium oxide?
  • A.  K+ cations with electronic configuration 2,8,8 are formed
  • B.   O- anions with electronic configuration 2,8 are formed
  • C.   Potassium oxide is a solid with a high melting point
  • D.   The formula of the compound formed is K2O
10, Aqueous ionic substances conduct electricity because they have ...
  • A.   mobile electrons
  • B.   atoms which are free to move
  • C.   ions which are free to move
  • D.   ions arranged in a regular lattice