Target Grades: 10 - 14

Number of Students:‚ 24 students working in groups of 2

Use a variety of basic volumetric measuring techniques to distinguish between precision and accuracy, while identifying an unknown liquid by its density. Students work as ¢‚¬Å“analytical chemists to learn the importance of measurement reproducibility. Lessons include statistical analysis calculations of mean, standard deviation, and relative error. Students address the Inquiry Question: How is a physical constant used to verify the precision of a measuring tool? Ideal for AP Chemistry, Chemistry I or II, or Honors Chemistry. Glassware is included in the Enhanced Kit (16-101B). Kit designed to exceed 2013 AP Next Generation National Standards. State of the Art instructor manual features background material, easy to follow stepwise protocols, assessment questions, sample data, modeled calculations, and an answer key. Recommended: analytical balance; not included. Meets AP Science Practice 2.