Unit 6 - Covalent Compounds

A covalent bond is a bond between a _____ and a ______

• metal, nonmetal
• metal, metal
• nonmetal, nonmetal

When two atoms share electrons, a chemical bond is formed.  This type of bond is called:

• covalent bond
• ionic bond
• crystal bond
• polyatomic bond

Which of the following is a characteristic property of molecular compounds?

• low melting points
• high melting points
• high boiling points
• high electric conductivity

PBr₅

• Phosphorus Bromide
• Phosphorus Pentabromide
• Pentaphosphorus bromide
• Phosphorus Bromine

carbon monoxide

• CO
• CO₂
• C₂O
• COH

BrO₃

• bromine oxide
• monobromine trioxide
• bromine trioxide
• bromine (III) oxide

Which of these is covalent?

• NaCl
• Pb(NO₃)₂
• CO₂
• AlCl₃

Disulfur trioxide

• S₃O₂
• SO
• S₂O₃
• S₂O

Phosphorous trichloride

• PCl₃
  
• P₃Cl
• P₃Cl₃
• PCL

A covalent bond is formed when two atoms ____ electrons

• share
• lose
• transfer
• gain