Chemistry Unit 5 Notes 4 Question Preview (ID: 62442)

Properties of Ionic Compounds

a) Structure:Crystalline solids Melting point:Generally high Boiling Point:Generally high

b) Electrical Conductivity:Excellent conductors, molten and aqueous

c) Solubility in water:Generally soluble

d) All True

Sodium Chloride Crystal Lattice:

a) Ionic compounds form solids at ordinary temperatures.

b) Ionic compounds organize in a characteristic crystal lattice of alternating positive and negative ions.

c) All true

Lattice:

a) A 3-D system of points designating the centers of components (atoms, ions, or molecules) that make up the substance

b) gsfagfsagsgsa

A Comparison of Ionic and Molecular Compounds

a) The force that holds ions together in an ionic compound is a very strong electrostatic attraction

b) In contrast, the forces of attraction between molecules of a covalent compound are much weaker

c) This difference in the strength of attraction between the basic units of molecular and ionic compounds gives rise to differ-

d) different properties between the two types of compounds./////All True

A Comparison of Ionic and Molecular Compounds

a) Molecular compounds have relatively weak forces between individual molecules.

b) They melt at low temperatures.(Put this as true)

c) The strong attraction between ions in an ionic compound gives ionic compounds some characteristic properties, listed below.

d) high melting points/hard but brittle/not electrical conductors in solid state, because ions can't move; goodmolten or aqueous

sssss

a) d

b) true

rwgge

a) true

b) dddd

gwgwgw

a) true

b) svsvsf

fwgwrg

a) true

b) not true

fwvsrfwvs

a) right

b) not right

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