Identifying 3 Unkown Compounds (Physical Properties Of Ionic And Molecular Solids)
Purpose:
β’ To study some of the physical properties of two types of solids β ionic and molecular solids.
β’ To classify three unknown substances as ionic compounds, polar covalent compounds or non-polar covalent compounds.
β’ To identify the three unknowns.
Observations:
A B C
Solubility in:
β’ H2O
β’ 2-Propanol
Soluble
Insoluble
Soluble
Insoluble
Insoluble
Soluble
Conductivity None High None
Melting Point 100 β 525 β > 525 β < 100 β
Odour Subtle None Very Strong
Concluding Questions:
1. Identify the type of solid in each unkown compound. Support these conclusions with observations.
Compound A is a polar covalent compound because it has many β in betweenβ properties, such as the following:
β’ The compound is soluble in water, which is usually an ionic property.
β’ The compound melted at a temperature between 100 and 525 degrees Celsius, which is not a definite property of ionic or non-polar covalent bonds. Hence, it is covalent.......
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Approximate Word Count: 797
Approximate Pages: 4 (250 words per double-spaced page)
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