Abstract: The purpose of the experiment was to introduce the chemistry student to basic laboratory procedures and demonstrate working knowledge of the equipment used and all safety rules. A 20cm piece of glass tubing was broken and heated for 28 seconds until it was bent into a 90 degree angle. A beaker was filled with 250mL of water with an initial temperature of 22 degrees Celsius. The water was then boiled and the temperature was reported to be 103 degrees Celsius; the temperature range was 81 degrees Celsius. Lastly, 2g CaCO3 was mixed, using a stirring rod, with 200mL of cold water. The mixture was then filtered and the volume was measured at 200mL with no change.
Date: April 1, 2014
Purpose: The purpose of this experiment was to introduce the chemistry student to basic laboratory procedures, demonstrate a working knowledge of the equipment and all safety features, and to perform simple lab procedures and compose a lab report at the conclusion of the exercise.
Observations: The glass tubing was heated over an open flame for 28 seconds before it was able to bend into a 90 degree angle. The beaker of water was initially 22 degrees Celsius, however, after reaching boiling point, it was 103 degrees Celsius 2g CaCO3 was mixed, using a stirring rod, with 200mL of cold water. The mixture was then filtered and the volume was recorded at 200mL. There was no change apparent in the volume of the two mixtures.
Data: Temperature of H2O (degrees Celsius)