What is a single covalent bond?
  • One pair of shared electrons
  • Two pairs of shared electrons
  • One electron shared between two atoms
  • Four electrons shared between two atoms
Which of the following would have covalent bonding?
  • A compound made from metals
  • A compound made from non-metals
  • An element made from metals
  • None of the above
Chlorine has seven electrons in its outer energy level (shell). Six of these are arranged in pairs with one on its own. How many covalent bonds can it form?
  • One
  • Two
  • Three
  • Seven
Why is the bonding in chlorine gas covalent?
  • Chlorine gas is made from molecules
  • Chlorine is an element
  • Chlorine is a halogen
  • Chlorine is a non-metal
Which of the following could have covalent bonding?
  • An alloy
  • Atoms of a metal
  • Atoms of a non-metal
  • Molecules of a non-metal
Which of the following is true about the compound carbon disulfide?
  • It is made from molecules
  • It is ionically bonded
  • It is covalently bonded
  • There are twice as many sulfur atoms as carbon atoms
Which of the following word equations correctly represents a reaction in which covalent bonding occurs?
  • Hydrogen + oxygen → water
  • Carbon + dioxide → carbon dioxide
  • Sulfuric acid + zinc → hydrogen + zinc sulfate
  • Chlorine + chlorine → dichlorine
How is a single covalent bond conveniently represented?
  • Two dots side by side
  • A short horizontal line between the symbols of the elements involved
  • A dot followed by a dash followed by a dot
  • A semi colon
Which of the following represents a molecule of carbon dioxide?
  • O=O=C
  • C=O=O
  • O=C=O
  • C=O=C
Is salt covalently bonded?
  • Yes, because it is made from crystals
  • Yes, because it dissolves in water
  • No, because it is made from a metal joined to a non-metal
  • No, because it can be obtained from the ground
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