Scientific Measurements, Precision, And Accuracy Of Laboratory Glassware

1277 WordsSep 7, 20156 Pages
Scientific Measurements, Precision, and Accuracy of Laboratory Glassware When conducting experiments, scientists must understand the significance of accurate and precise measurements while utilizing the correct volumetric containers that are used to quantify data. That way, all information that is collected can be trusted and accurately reflects the facts of the investigation. When measuring the volume of aqueous solutions, it is imperative to acknowledge the accuracy, precision, and percent error of the measurements. Accuracy is how close the results are to the actual accepted measurement, also known as the “true” value. Precision is how close two or more measurements are relative to each other, only found by measuring a solution multiple times. Percent error is the difference between an an accepted value and a measured value, and is used to determine the accuracy of measurements.Understanding the importance of the aforementioned terms will lead to more valid experiments. State Problem/ Purpose: The purpose of this experiment is to learn the differences between the accuracy/ precision of three pieces of laboratory glassware, as well as to understand when to make an approximated measurement or an exact one. Using a volumetric pipet, graduated cylinder, and a beaker will yield different accuracies, due to the nature of the glassware. Thus, as mentioned before, it is important to understand when to know that one’s data is reliable or not. The formula “density = mass/volume”
Open Document