Chem Lab 1

Chem Lab 1 - INTRODUCTION The purpose of this lab was to...

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INTRODUCTION The purpose of this lab was to test some of the electrical properties of ionic and molecular compounds, more specifically, how conductive these compounds are when dissolved in water. Ionic compounds are formed when a metal loses valence electrons to have a full octet and joins with a nonmetal that has gained electrons to complete its octet. These two particles assume an individual charge that allows them to combine in ratios that cancel out the partnered particles charge. The resultant particle has a net-charge of zero. Most ionic particles are crystalline solids, but they tend to be very polar, allowing them to dissolve in water. While dissolved, the individual charged particles separate and get surrounded by water molecules. Because these particles have charges, they are capable of carrying an electric current, making them very good conductors in solution, (as well as at a molten state). Molecular compounds are generally composed of nonmetal elements. Not many molecular compounds are soluble in water, they are not as polar as ionic compounds, and they are poor conductors of heat and electricity. Particles can dissociate from a molecular compound while it is dissolved, but this is nowhere near as prevalent as in ionic compounds. Because nothing dissociates and because molecular compounds have little polarity, they tend not to conduct electricity well. Other than exploring the differences between ionic and molecular compounds, this lab explored different types of electrolytes. An electrolyte is a substance dissolves into ions and allows for an electric current to flow. There are three types of electrolytes, strong electrolytes, weak electrolytes, and nonelectrolytes.
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Chem Lab 1 - INTRODUCTION The purpose of this lab was to...

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