Ionic And Covalent Bonding Test With Answers
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41) Which formula represents a covalent compound?
a) CaO
b) CO
c) Li
O
2
d) Al
O
2
3
2) A strontium atom differs from a strontium ion in that the atom has a greater
a) number of electrons
b) number of protons
c) atomic number
d) mass number
3) An ionic bond forms when an atom:
a) shares electrons with another atom
b) move electrons back and forth to another atom
c) moves electrons around the nucleus
d) takes electrons from another atom
4) Electronegativity is a measure of:
a) The strength of electric current when an ionic compound is put in water
b) How strongly an atom will try to take an electron from another atom
c) How strong an electron is held in its orbital
d) How strongly an atom wants to give up an electron
5) Ionic bonds tend to be:
a) Easily broken by heat
b) Poor conductors of electricity when placed in water
c) Both a and b
d) None of the above
6) Covalent bonds tend to be:
a) Easily broken by heat
b) Poor conductors of electricity when placed in water
c) Both a and b
d) None of the above
7) Salt (NaCl) is an example of a compounds that forms from:
a) covalent bonds
b) metallic bonds
c) hydrogen bonds
d) ionic bonds
8) Covalent bonds are formed when an atom:
a) Shares electrons with another atom
b) move electrons back and forth to another atom
c) moves electrons around the nucleus
d) takes electrons from another atom
9) Our main definition of a molecule is:
a) Molecules have atoms and atoms have molecules
b) Atoms consist of neutrons, protons and electrons
c) Molecules have more than one atom bound together
d) Atoms consist of more than one molecule
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