Chemistry Lab 22

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By Nihar Mahajan and Madisen Camp-Chimenti
By Nihar Mahajan and Madisen Camp-Chimenti
January 31, 2013
Kathleen Sylva
Chemist
27th Snowflake Avenue
Sammamish, WA 98075

Dear Mrs. Sylva,
After days of research, I have come upon one of the substances that will be the ideal compound for the glaze. I conducted a test to analyze the solubility of the substance in water and alcohol, the conductivity, and melting point. Some substances came very close to passing all the tests, but only one substance was able to pass all of them. I recommend using sodium carbonate as your substance.

Of all the substances, only two were covalent and two were ionic. The ionic substances, sodium chloride, sodium carbonate, and salicylic acid, came close to the description you requested. The covalent substances, sucrose and salicylic acid, did not match the descriptions. The best substance would definitely be sodium carbonate, since it passed all the tests. Sodium carbonate had a high melting point, so it will be able to last for a long time in the kiln fire. It also is soluble in water, and not in alcohol allowing flexibility of the variety of pots you can make. Also, sodium carbonate is a conductive substance, especially when it is dissolved in water. Other substances like salicylic acid dissolved in water, had low boiling point, and was soluble in alcohol. Sodium chloride did have a high melting point, but it was soluble in alcohol. Sucrose was soluble in water as well, but it had a very low melting point. All the substances except for sodium carbonate did not pass the requirements, and therefore sodium carbonate is the best possible substance.

In order to prove this, I conducted a lab to determine the solubility, conductivity, and melting point of each substance. First, I made sure to obtain a Bunsen burner, evaporating dish, ethanol, the four substances, distilled water, conductivity probe, wash bottles, test tubes, and a beaker. I made sure the materials were cleaned to...
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