Department of Chemistry
The objectives of this experiment are (a) to become proficient in using the analytical balance and measuring volumes of liquids and solids and (b) to understand the concepts of accuracy and precison, how they are specified, and how they are used to investigate the measurement tools used in this lab.
You will use three different types of calibrated glassware to deliver 10 mL of water to a vial. By repeating the delivery several times with each type of glassware, and recording the exact mass of water delivered, you will determine which measureing tool provides the most precision.
You will prepare a sucrose solution that is 25% sucrose by weight. Using your most precise piece of glassware, you will determine the denisty of the solution you prepare and determine the accuracy of your density value by comparing it to a value known to be true.
Finally, you will determine the volume of a piece of metal and, together with the mass of the piece, identify the type of metal from a list of metals and their densities.