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Chapter 10: Q71 E (page 592)

Classify each substance in the table as either a metallic, ionic, molecular, or covalent network solid

Short Answer

Expert verified

X is ionic, Y is metallic and Z is covalent network solids.

Step by step solution

01

To classify each substances 

Metallic solid

Covalent solid

Molecular solid

Ionic solid

Electrical conductivity

Good conductors of heat and electricity

Poor conductors of heat and electricity

Poor conductors of heat and electricity

Poor conductors of heat and electricity

Melting point

Melting point depends strongly on electronic configuration

high

Low

Relatively high melting point

Appearance

Malleable, ductile, lustrous

Hard,brittle and dull

Soft and dull surface

Hard,brittle and dull

Solubility in water

Insoluble

Insoluble

Insoluble

soluble

Hence Based on the table shown in the detailed section we can say that X is ionic, Y is metallic and Z is covalent network solids.

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Most popular questions from this chapter

Heat is added to ice at 0 掳C. Explain why the temperature of the ice does not change. What does change?

Identify the following substances as ionic, metallic, covalent network, or molecular solids: Substance A is malleable, ductile, conducts electricity well, and has a melting point of\({\rm{1135 ^\circ C}}\). Substance B is brittle, does not conduct electricity as a solid but does when molten, and has a melting point of\({\rm{2072 ^\circ C}}\). Substance C is very hard, does not conduct electricity, and has a melting point of\({\rm{3440 ^\circ C}}\). Substance D is soft, does not conduct electricity, and has a melting point of\({\rm{185 ^\circ C}}\).

How does the boiling of a liquid differ from its evaporation?

The molecular mass of butanol,\({C_4}{H_9}OH\), is\(74.14\); that of ethylene glycol, \({\rm{C}}{{\rm{H}}_{\rm{2}}}\left( {{\rm{OH}}} \right){\rm{C}}{{\rm{H}}_{\rm{2}}}{\rm{OH}}\), is 62.08, yet their boiling points are \({\bf{117}}.{\bf{2}}{\rm{ }}^\circ {\bf{C}}\) and \(174 ^\circ C,\)respectively. Explain the reason for the difference.

Dry ice, \({\rm{C}}{{\rm{O}}_{\rm{2}}}{\rm{(s)}}\), does not melt at atmospheric pressure. It sublimes at a temperature of \({\rm{ - 7}}{{\rm{8}}^{\rm{o}}}{\rm{C}}\). What is the lowest pressure at which \({\rm{C}}{{\rm{O}}_{\rm{2}}}{\rm{(s)}}\) will melt to give \({\rm{C}}{{\rm{O}}_{\rm{2}}}{\rm{(l)}}\)? At approximately what temperature will this occur? (See Figure \({\rm{10}}{\rm{.34}}\) for the phase diagram.)
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