# Classroom Resources: Reactions & Stoichiometry

1. ## Sort by:

1 – 4 of 4 Classroom Resources

• Percent Composition, Stoichiometry, Limiting Reactant, Percent Composition, Lewis Structures | High School

### Lab: Untouchable Key Escape Room

In this lab, students are presented with a key wrapped in aluminum foil a quantity of solid copper (II) chloride, a balance, distilled water and a selection of standard laboratory glassware and equipment. Without using their hands to touch the key, students must react the key with a copper (II) chloride solution in order to free the key and use it to escape from the chemistry classroom!

• Identifying an Unknown, Mole Concept, Percent Composition, 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.

• Acid Base Reactions, Stoichiometry, Percent Composition, Titrations, Indicators | 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.

• Identifying an Unknown, Net Ionic Equation, Stoichiometry, Percent Composition, Molar Mass, Error Analysis | 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.