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Measuring the Density of a Sugar SolutionKaren I. Peterson This experiment addresses the concept of equipment calibration for reducing systematic error. Students prepare and measure the densities of sucrose solutions with simple glassware that has been calibrated using the density of water. By careful work, students can determine the density to within 0.5%. allowing accuracy to be a major component of the final grade. Peterson, Karen I. J. Chem. Educ.2008, 85, 1089.

Calibration |

Carbohydrates |

Physical Properties |

Quantitative Analysis |

Solutions / Solvents

Using Candy Samples To Learn about Sampling Techniques and Statistical Data EvaluationLarissa S. Canaes, Marcel L. Brancalion, Adriana V. Rossi, and Susanne Rath This easy, interesting exercise demonstrates important aspects of sampling techniques and explores a simple statistical approach to commonly used parameters, the use of histogram, box-plot and whisker plots, and parametric and non-parametric statistical methods. Canaes, Larissa S.; Brancalion, Marcel L.; Rossi, Adriana V.; Rath, Susanne. J. Chem. Educ.2008, 85, 1083.

Learning Theories |

Mathematics / Symbolic Mathematics |

Quantitative Analysis

Which Method Is Most Precise; Which Is Most Accurate?A. D. Jordan The main objective of this experiment, which involves determining the density of a liquid by several methods, is to familiarize students with the concepts of precision and accuracy using data that can be acquired easily with a variety of apparatus and analyzed by simple statistics and a linear regression. Jordan, A. D. J. Chem. Educ.2007, 84, 1459.

Formulas and CompositionEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.

Quantitative Analysis

Lake StudyDavid M. Whisnant, James A McCormick, Benjamin Fortin, Patrick Nutter Lake Study for Windows is a two-part simulation designed to involve students with the scientific method. It allows them to collect data, formulate hypotheses, and test the hypotheses with controlled experiments.