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Physical Science Notes 416-436
Isn't it Ionic Lab
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Isnt it Ionic: dont ya think?

In this lab you were comparing two different solids.

 

        NaCl                    vs.         Para dichlorobenzene

Metal-Nonmetal                                 C6H4Cl2

    Table Salt                             Whole bunch of Nonmetals

Ionic Compound                       Covalent Compound

 

Para dichlorobenzene molecular set up:

c6h4cl2.jpg

A series of experiments were conducted on NaCl and P-dichlorobenzene and then the observations were placed in the table.

 

Test

NaCl

C6H4Cl2

Colour

White

White

Looks

Cubes, grains

Rocky chunks

Odour

Odourless, none

Disinfectant, smelly

Solubility in water

Dissolves

Didnt dissolve, no insoluble

Solubility in methanol

Didnt dissolve, no insoluble

Dissolve, soluble

Conductivity

Salt in water, conduction

No conduction

Melting point

High

Low melting point

 

These are the important properties of Ionic compounds and Covalent compounds:

 

Ionic cpds = dissolves in water

                 = conducts electricity in water

                 = high melting point

                 = dont smell

 

Covalent cpds = dont conduct in water

                        = dont dissolve in water

                        = low melting point

                        = smell

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