Chemistry Chapter 9 Answers
Study Guide
Chapter review: 90-100 even, 105, 108
Solving problems worksheet
smallest particles
Covalent compounds
molecules
Ionic compounds
cations and anions (formula units)
origin of bonding
forces between particles
electron sharing
strong bonds between atoms
electron transfer
strong attractions between anions and cations
weak attractions between
molecules
strong repulsions between ions of like charge
(Brittle)
close on the periodic table
widely separated on the periodic table
elements present
metallic elements present rarely
usually
electrical conductivity
good, when melted or dissolved
poor
state at room temperature solid, liquid, or gas
solid
melting and boiling points lower
higher
other names
salts
covalent compounds
1. Which of the following is NOT a characteristic of ionic compounds?
electrons are shared between atoms
liquid forms conduct electricity well
solid forms conduct electricity poorly
usually made of metals and nonmetals
always contain both cations and anions
2. Which of the following substances will conduct electricity best when in
liquid form?
KF
H2S
C6H12O6
CO2
H2O
3. Which of the following is a characteristic of covalent compounds?
usually made of metals and nonmetals
liquid forms conduct electricity well
made of molecules
always contain both cations and anions
bonding involves transfer of electrons between atoms
4. Which of the following substances is made of molecules?
ClBr
KBr
CaBr2
BaBr2
NaBr
5. Which of the following substances will not conduct electricity well when
in liquid form?
NaCl
CaCl2
CCl4
TiCl4
AlCl3
6. Which of the following compounds contains a polyatomic ion?
CO2
LiCl
C6H12O6
KBr
Na2SO4