Name: _____________________________
Score: _____/17
Self Assessment: Chemical Bonding
All the information and directions for how to do these can be found in ch 5.1
& 5.2 in your book and on the activities Bonding Basics and Compounds the
Easy Way.
1. Atoms try to bond together to get their outer energy level ___________ of electrons,
which would take the magic number of _______, except for ___________________
and __________________, which only need _______.
2. Metals tend to _____________________ electrons and make __________________ ions.
They are found on the _________________ hand side and ____________________ of
the periodic table.
3. Nonmetals tend to _________________ electrons and make __________________ ions.
They are found on the _________________ hand side of the periodic table.
4. When a metal and nonmetal bond, they ____________________ electrons and form
a(n) ______________________ bond.
5. When a two nonmetals bond, they ____________________ electrons and form a(n)
______________________ bond.
6. There can be both covalent and ionic bonds. These are called _____________________
ions. They are covalently bonded but act like one ion and form ionic bonds with
other atoms.
Decide whether each of the following is ionic or covalent and show a Lewis diagram
and formula for the compound.
7. - 8. Lithium and Nitrogen
9. - 10.Oxygen and Chlorine
11. - 12. Carbon and Sulfur
Decide whether each is ionic or covalent and write the formula for each compound.
You do not have to make any drawings. Here are some polyatomic ions to help
you out.
Carbonate
Hydroxide
Nitrite
Sulfate
CO3 2OH NO2 SO4 2-
Chlorate
Nitrate
Phosphate
Ammonium
ClO3 –
NO3 –
PO4 3NH4 +
13. _________________ Hydrogen (acts like a metal) and carbonate ion
14. _________________ Nitrogen and Iodine
15. _________________ Calcium and Nitrogen
16. _________________ Ammonium ion and Oxygen
17. _________________ Phosphorus and Sulfur
Answer Key_
Score: _____/17
Self Assessment: Chemical Bonding
Name: _
All the information and directions for how to do these can be found in ch 5.1
& 5.2 in your book and on the activities Bonding Basics and Compounds the
Easy Way.
1. Atoms try to bond together to get their outer energy level
_full__ of electrons, which would take the magic number
of __8___, except for __hydrogen (H)__ and __Helium
(He)__, which only need __2___.
2. Metals tend to ___lose___ electrons and make _positive_
ions. They are found on the __left__ hand side and
__center_ of the periodic table.
3. Nonmetals tend to __gain/take_ electrons and make
__negative__ ions. They are found on the __right__
hand side of the periodic table.
4. When a metal and nonmetal bond, they __transfer__
electrons and form a(n) __ionic__ bond.
5. When two nonmetals bond, they __share_ electrons and
form a(n) _covalent_ bond.
6. There can be both covalent and ionic bonds. These are called
_polyatomic__ ions. They are covalently bonded but act
like one ion and form ionic bonds with other atoms.
Decide whether each of the following is ionic or covalent and
show a Lewis diagram for the compound.
7. – 8. Lithium and Nitrogen (Li3N
… ionic)
9. - 10. Oxygen and
Chlorine (OCl2 …
covalent)
11. - 12.
Carbon and
Sulfur (CS2
… covalent)
Decide whether each is ionic or covalent and write the formula
for each compound. You do not have to make any
drawings. Here are some polyatomic ions to help you out.
Carbonate
CO3 2Hydroxide
OH Nitrite NO2 Sulfate SO4 2-
Chlorate ClO3 –
Nitrate NO3 –
Phosphate PO4 3Ammonium NH4 +
13. _H2CO3____ Hydrogen (acts like a metal) and carbonate ion
14. _NI3_____ Nitrogen and Iodine
15. _Ca3N2____ Calcium and Nitrogen
16. _(NH4)2O____ Ammonium ion and Oxygen
17. __P2S3_____ Phosphorus and Sulfur