Naming ionic compounds
Coulombs law and melting points of compounds
Look at food or product labels in and around your home. Post on your blog (name and formula) 5 ionic compounds that you found, and list the common product in which they are contained.
Sodium aluminum phosphate [ Na3Al2H15(PO4)8 ]-Flour tortillas
Aluminum Bicarbonate [Al(HCO3)3]-Goldfish crackers
Sodium Bicarbonate [Na(HCO3)]-Lay’s potato chips
Monocalcium phosphate [CaPO4]-Cereal bar
Calcium Chloride [CaCl]-Canned tomatoes
Explain why ionic compounds tend to have high melting points.
Using Coulomb’s law (F=K*q1q2/r2) we find that as the charge of the ionic compound increases, the melting point of the compound increases. Also using Coulomb’s law, we discover that as the size of the ionic compound increases, the melting point decreases. From this observation, we can conclude that the force between atoms varies directly with the melting point of the compound.
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