Classroom Resources: Reactions & Stoichiometry

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Percent Composition, Mole Concept, Identifying an Unknown, Emission Spectrum | High School

Lesson Plan: Chemical Analysis of Martian Rocks

In this lesson, students are challenged to analyze the spectral graphs obtained by the Curiosity Mars Rover. Based on their examination students will determine the component elements of each sample, as well as the relative abundance of each element. With this information the student will complete calculations to find the empirical formula and identify the composition of the unknown rock. Finally students will complete research to see if these rocks are actually like those on Earth.
Titrations, Indicators, Acid Base Reactions, Stoichiometry, Percent Composition | High School

Lab: The Egg-straordinary Issue

In this lab students will determine the percent composition of calcium carbonate contained in an eggshell by using a back titration in order to address a farmer’s concerns about his hen’s fragile eggs. Two versions of the student lab are included, a scripted version, and an inquiry version.
Percent Composition, Identifying an Unknown, Net Ionic Equation, Atomic Mass | High School

Lab: Analysis of Carbonate Compounds

In this lab, students identify three unknown substances by measuring the amount of product (CO2) produced by a reaction with hydrochloric acid.