11. A metallic bond is best described as an attraction between ...
  • A. positive and negative ions
  • B. metal atoms and delocalized electrons
  • C. positively charged nuclei and a shared pair of electrons
  • D. metal atoms
12. Which of the following is NOT a covalently bonded substance?
  • A. carbon dioxide, CO2
  • B. aluminium oxide, Al2O3
  • C. diamond, C
  • D. polythene, polythene formula
13. Which statement best completes the description of ionic bonding?

Ionic bonding is the strong electrostatic attraction between..

  • A.   positive nuclei and electrons and occurs by the sharing of electrons
  • B.   positive nuclei and electrons and occurs by the transfer of electrons
  • C.   positive ions and negative ions and occurs by sharing electrons
  • D.   positive ions and negative ions and occurs by transfer of electrons
14. Sulfur is in group 6 of the Periodic Table. What is the formula of its ion?
  • A.   S6-
  • B.   S6+
  • C.   S2-
  • D.   S2+

15. Which dot and cross diagram correctly represents the bonding in an oxygen molecule, O2?

oxygen molecule dot cross diagram

16. The diagram shows the outline of part of the Periodic Table:

Periodic table outline

Which two elements could form a covalent compound?

  
  • A.   W and X
  • B.   X and V
  • C.   Y and W
  • D.   Z and X
17. The structure of an ionic compound is best described as a lattice structure consisting of a regular arrangement of ..
  • A.   molecules
  • B.   cations and anions
  • C.   atoms
  • D.   cations and electrons

18. Which row is correct about the strength of ionic, covalent and metallic bonds?

  ionic covalent metallic
A weak weak strong
B weak strong weak
C strong weak strong
D strong strong strong
19. The picture shows the structure of an ionic compound such as sodium fluoride.

This structure is often described as a ...

 

 Sodium fluoride structure
  • A.   macromolecule
  • B.   polymer
  • C.   molecule
  • D.   lattice
20. The diagram shows a ball and stick model of sodium chloride.

What is a limitation of this model?

 

 

 

 collecting CO2 gas from marble chips and acid
  • A.   It shows spaces between the ions
  • B.   It shows the ions alternating
  • C.   It doesn’t show enough ions
  • D.   It shows the structure in two dimensions