Worksheet on Bond Types
1. Why are F and Cs
special? They have the highest and lowest
electronegativities.
4. Compare and contrast the
physical properties of metals, ionic salts, and covalent compounds
(gas/liquid/solid at room
temperature, density, conductivity, interactions with water).
metals: solid; high density; conduct electricity
ionic salts: solid;lower density than metals; nonconductors but
separate into ions when dissolved in water "electrolyte"
covalent compounds: solid, liquid or gas; low density;
nonconductors
5. For each of the following
compounds, use your answers to question 4 to determine the bond
type.
a. HCl (g) covalent
b. CaO (s) ionic
c. SiO2 (s, nonelectrolyte) covalent
d. AlSi (s, semiconductor) semimetallic
e. GaAs (borderline semimetal/covalent solid)
f. ZnS (borderline ionic/covalent solid)
g. BaSi2 (s, conducts electricity) metallic
h. MgH2 (s, strong electrolyte) ionic
SKILL DEVELOPMENT EXERCISES
For each of the following compounds,
use your graph to predict if its bonding is metallic, ionic, or
covalent.
1. AlBr3 ionic
2. SnCl4 covalent
3. CdLi metallic
4. HgO ionic
5. Mg3N2 ionic
6. InSb semimetallic
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last updated: February 22, 2010