Target: 10 Questions in 10 minutes

An IB Chemistry data booklet is helpful

1. Which statement is true for the formation of an ionic bond?

  • A.   Metal atoms share electrons with non-metal atoms
  • B.   Ions always have noble gas electronic configurations
  • C.   Ionic bonding only forms between metal and non-metal elements
  • D.   Ions are attracted by electrostatic attractions
2. What is the correct formula for calcium nitrate?
  • A.   Ca3N2
  • B.   Ca2N3
  • C.   CaNO3
  • D.   Ca(NO3)2
3. 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
4. Which type of structure is formed by an ionic compound?
  • A.   A giant lattice
  • B.   A simple molecule
  • C.   A covalent network
  • D.   A lattice of positive ions and delocalized electrons
5. Select the diagram which correctly shows the valence electrons in magnesium fluoride.

electrons magnesium fluoride x 4

6. Which statement is NOT true for the formation of potassium oxide?

  • A.  K+ cations with electronic configuration of 2,8,8 are formed
  • B.   The formula of the compound formed is K2O
  • C.   O- anions with electronic configuration 2,8 are formed
  • D.   Potassium oxide is a solid with a high melting point
7. 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
8. Which of the following compounds contains both ionic and covalent bonds?
  • A. MgS
  • B. NaH2PO4
  • C. H2O2
  • D. C2H5OH
9. Which of the following ionic compounds has the most endothermic lattice enthalpy?
  • A.   KCl
  • B.   K2O
  • C.   MgCl2
  • D.   MgO

10. Which row gives the correct formulae for all the ions?

  hydrogencarbonate nitrate(V) ammonium
A HCO32- NO3- NH3+
B HCO3- NO3- NH4+
C HCO32- NO2- NH3+
D HCO3- NO3- NH4+