SN-­‐1-­‐7-­‐13 PROPERTIES OF IONIC COMPOUNDS 1.
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Most ionic compounds are crystalline solids at room temperature. Ionic compounds generally have high melting and boiling points. Under pressure ionic crystals will shatter or cleave. Ionic compounds can conduct and electric current (are electrolytes) in their molten (liquid) state and also in their aqueous (when dissolved in water) state. Explanation of above Empirical Properties 1,2 Ionic bonds are very strong and it requires a lot of energy to break them. 3. Ions are arranged in a crystal lattice. Each negative ion is surrounded by positive ions and vise versa. 4. When ionic compounds are melted or dissolved the ions separate and are able to move freely. These moving charged particles allow the liquid or solution to be an electrolyte. Read pages 196  199 Complete #14  22