Wednesday, February 15, 2012

Assignment #6


1)What were today's two main topics?
-Melting points
-What will be on the exam on friday

1)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.
-water: Sodium Chloride: NaCl
-granola bar: Calcium Carbonate CaCO3
-teddy grahams: Zinc Oxide: Zn2O
-animal crackers: Thiamine Nononitrate: C12H17ClN4OS
-mountain due: Calcium Disodium: CaS

1)Explain why ionic compounds tend to have high melting points.
-Because the force between then is a lot smaller, according to coulomb's law this means that the melting point with be much higher.

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