Q.1
Some covalent substances have huge numbers of atoms bonded together by a network of covalent bonds. This is called...
  • a giant covalent structure
  • a giant structure
  • a covalent giant
  • a covalent network
Q.2
How many covalent bonds can nitrogen form?
  • 2
  • 3
  • 1
  • 4
Q.3
How many electrons are involved in a covalent bond?
  • 4
  • 2
  • As many as are free
  • 1
Q.4
Which of these has molecules with two atoms joined by a covalent bond?
  • Bromine
  • Copper
  • Neon
  • Methane
Q.5
Pick the correct combination of properties of most covalent compounds.
  • Non-conductor Low melting points
  • Conductor Low melting points
  • Conductor High melting points
  • Non-conductor High boiling points
Q.6
A water molecule is covalently bonded. How many covalent bonds does it have?
  • 1
  • 2
  • 3
  • 4
Q.7
What happens to electrons in covalent bonding?
  • They are shared by the atoms
  • They pass from one atom to another
  • They are removed from the atoms' shell
  • They are added to both atoms' shells
Q.8
Methane is covalently bonded. How many bonds are involved?
  • 1
  • 2
  • 3
  • 4
Q.9
Covalent bonding occurs when what type of atoms join?
  • Metal and metal
  • Metal and non-metal
  • Non-metal and non-metal
  • Metal and a noble gas
Q.10
Where do the electrons for a covalent bond come from?
  • The nucleus
  • The outermost electron shell
  • The innermost electron shell
  • The electron shell with the most electrons
0 h : 0 m : 1 s