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Chemistry Unit 5 Notes 4
Test Description: Gsgws
Instructions: Answer all questions to get your test result.
1) Properties of Ionic Compounds
A
Solubility in water:Generally soluble
B
Structure:Crystalline solids Melting point:Generally high Boiling Point:Generally high
C
All True
D
Electrical Conductivity:Excellent conductors, molten and aqueous
2) Sodium Chloride Crystal Lattice:
A
All true
B
Ionic compounds form solids at ordinary temperatures.
C
Ionic compounds organize in a characteristic crystal lattice of alternating positive and negative ions.
3) Lattice:
A
A 3-D system of points designating the centers of components (atoms, ions, or molecules) that make up the substance
B
gsfagfsagsgsa
4) A Comparison of Ionic and Molecular Compounds
A
different properties between the two types of compounds./////All True
B
The force that holds ions together in an ionic compound is a very strong electrostatic attraction
C
This difference in the strength of attraction between the basic units of molecular and ionic compounds gives rise to differ-
D
In contrast, the forces of attraction between molecules of a covalent compound are much weaker
5) A Comparison of Ionic and Molecular Compounds
A
They melt at low temperatures.(Put this as true)
B
The strong attraction between ions in an ionic compound gives ionic compounds some characteristic properties, listed below.
C
high melting points/hard but brittle/not electrical conductors in solid state, because ions can't move; goodmolten or aqueous
D
Molecular compounds have relatively weak forces between individual molecules.
6) sssss
A
d
B
true
7) rwgge
A
dddd
B
true
8) gwgwgw
A
svsvsf
B
true
9) fwgwrg
A
not true
B
true
10) fwvsrfwvs
A
right
B
not right
*select an answer for all questions
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