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,
whichwould take the magic number of ______, except for ______and ______, which only need ______.
2. Metals tend to ______electrons and make ______ions.
Theyare found on the ______hand side and ______of the periodic table.
3. Nonmetals tend to ______electrons and make ______ions.
Theyare found on the ______hand side of the periodic table.
4. When a metal and nonmetal bond, they ______electrons andform
a(n) ______bond.
5. When a two nonmetals bond, they ______electrons andform 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 CO32-Chlorate ClO3–
Hydroxide OH -NitrateNO3–
NitriteNO2-PhosphatePO43-
SulfateSO42-Ammonium NH4+
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
Name: _Answer Key_ 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
_full__ of electrons, whichwould 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. Theyare found on the __left__ hand side and __center_ of the periodic table.
3. Nonmetals tend to __gain/take_ electrons and make
__negative__ ions. Theyare 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
forma(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 diagramfor 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 CO32-Chlorate ClO3–
Hydroxide OH -NitrateNO3–
NitriteNO2-Phosphate PO43-
SulfateSO42-Ammonium 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