Question

key terms
match the words on
the left with the
correct definition on
the right.
ionic compound
polyatomic ion
monoatomic ion
covalent molecule
chemical formula
ion made of two or
more atoms
ion consisting of one
atom
made of two or more
nonmetals
made of a metal and
nonmetal
the number of atoms
for each element in a
substance

Explanation:

• An ionic compound is made of a metal and nonmetal.
• A polyatomic ion is an ion made of two or more atoms.
• A monoatomic ion is an ion consisting of one atom.
• A covalent molecule is made of two or more nonmetals.
• A chemical formula shows the number of atoms for each element in a substance.

Answer:

• Ionic compound: Made of a metal and nonmetal.
• Polyatomic ion: Ion made of two or more atoms.
• Monoatomic ion: Ion consisting of one atom.
• Covalent molecule: Made of two or more nonmetals.
• Chemical formula: The number of atoms for each element in a substance.