CHEM 101 Lecture Notes - Lecture 3: Nonmetal, Covalent Bond, Ammonium Nitrate

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Chemical compounds are classified as ionic or molecular (or which is also known as covalent. Molecular compounds consist of two or more nonmetals and nonmetal elements while ionic compounds consist of metals and nonmetals. Molecular compounds are mostly gases, liquids or solids while ionic compounds are mostly crystalized solids. Compounds are also important because of their inherent ability to be conductive. This conductivity depends on whether they have strong, weak or non-electrolytes. First, it tests for the difference between ionic and molecular compounds by testing how well they conduct electricity. Ionic compounds when they dissolve in water, become ion which enables the solution to conduct electricity and therefore solution becomes an electrolyte. Covalent or molecular compounds on the other hand do not conduct electricity so their conductivity is low and therefore said to be nonelectrolytes. Secondly, the lab experiment also tests for the effect of concentration and ionic charges on a solution"s conductivity.