Module 6 Intro

1. Module 6 Intro

1.27. Module Summary/Assessment

Module Summary and Assessment

Module 6—Stoichiometry

Module Summary and Assessment

Module Summary

Stoichiometry is a method of predicting quantitative relationships within chemical systems. Knowing the quantity of substances involved in a process is important when planning or analyzing a process that will involve a chemical change.

Think back to the questions you were asked at the beginning of the module:

How do scientists and engineers use mathematics when analyzing chemical change?
How is a balanced chemical equation used to predict quantities of species involved in a chemical process?

In this module you viewed a balanced chemical equation as a recipe for a process, where coefficients of the species involved describe the amounts of particles involved. You also used your knowledge of mathematical relationships to calculate the quantity of matter participating in a process from measurable data—including mass, concentration, volume, and pressure. Finally, you verified the predictions made using the stoichiometric method by collecting and analyzing evidence obtained through laboratory investigations.

Module Assessment

The assessment in this module consists of the following:

Assignments for Lessons 1, 2, 3, and 4
Module Assessment (Parts 1, 2, and 3)—Stoichiometry Calculator submitted to your teacher for review and feedback
Module Assessment (Part 4)—Stoichiometry Calculator submitted to your teacher for a final grade

Scoring Guide for the Stoichiometry Calculator

Score

Criteria

5
Excellent

The design and function of the product is clearly explained. Operation of the Stoichiometry Calculator is straightforward and results in immediate, correct answers for all types of systems (mass, gases, and solutions). Correct and logical algorithms are used.

Instructions provided for the operation of the Stoichiometry Calculator are explicit and contain precise descriptions to make its operation straightforward and simple.

4
Good

The design and function of the product is well explained. Operation of the Stoichiometry Calculator is straightforward and results in immediate, correct answers for all types of systems (mass, gases, and solutions). Correct and logical algorithms are used.

Instructions provided for the operation of the Stoichiometry Calculator are clear, correct, and contain sufficient description to make its operation possible.

3
Satisfactory

The design and function of the product is explained. Operation of the Stoichiometry Calculator results in immediate, correct answers for all systems (mass, gases, and solutions). Correct and logical algorithms are used.

Instructions provided for the operation of the Stoichiometry Calculator are generally correct and accurate, making its operation possible.

2
Limited

The design and function of the product is poorly explained. Operation of the Stoichiometry Calculator involves more than simple input of a few values. The use of the calculator does not consistently result in correct answers for all systems (mass, gases, and solutions). Generally correct algorithms are used for most systems.

Instructions provided for the operation of the Stoichiometry Calculator are confusing or inaccurate, making its operation awkward but still possible.

1
Poor

The design and function of the product has one or more serious flaws. The use of the calculator does not consistently result in correct answers for any systems, but evidence of an attempt is provided.

Instructions provided for the operation of the Stoichiometry Calculator contain serious inaccuracies or omissions.

0
Insufficient

The response is not appropriate for a 20-level student.