Note: Steps 5 and 6, at the option of your teacher, can be done as a demonstration.
The properties of the four classes of substances studied showed marked differences. These differences are explained in terms of the bonding that holds the substances together in the solid state. Study the data table and list typical properties expected for the four kinds of substances, e.g., order of melting, hardness, solubility. Remember that water is a polar solvent while cyclohexane is a nonpolar solvent. Identify the unknown as being either ionic, covalent molecular, covalent network solid, or metal. Then answer the Implications and Applications questions that follow.
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