Students discover ionic and covalent solids do not conduct while ionic solids dissolves in water do conduct. Students test conductivity, solubility, research melting point and discover patterns.
First day into bonding! This activity drives home the idea that compounds are either ionic or covalent and ionic bonds are formed by transfer of electrons while covalent bonds are formed by sharing of electrons. Metallic elements are used for students to list as metallic bonding and to describe as "sea of electrons" bonding.
Students build models, give actual shape, bond angle and decide if polar or nonpolar.
A great lab activity to show basic shape vs. actual shape, polar vs. nonpolar and symmetrical vs. non-symmetrical. The balloon models help students understand the VSEPR model names.
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