# Chemical Reactions and Stoichiometry (31 Favorites)

SIMULATION in Balancing Equations, Stoichiometry, Classification of Reactions. Last updated May 14, 2019.

### Summary

In this simulation, students will participate in a short quiz that challenges their knowledge of three related topics: classification of reaction types, balancing equations and solving stoichiometry problems.

### Grade Level

High School

### NGSS Alignment

This simulation will help prepare your students to meet the performance expectations in the following standards:

**HS-PS1-7:**Use mathematical representation to support the claim that atoms, and therefore mass, are conserved during a chemical reaction.**Scientific and Engineering Practices**:- Using Mathematics and Computational Thinking

### Objectives

By the end of this simulation, students should be able to

- Classify a reaction as either: synthesis, decomposition, single replacement, double replacement or combustion, based on its chemical equation.
- Balance a chemical equation using whole number coefficients.
- Use the appropriate mole ratio from a balanced equation to solve a stoichiometric problem.

### Chemistry Topics

This simulation supports students’ understanding of

- Chemical Reactions
- Stoichiometry
- Classification of Reactions
- Balancing Equations

### Time

**Teacher Preparation**: minimal

**Lesson**: 20-30 minutes

### Materials

- Computer, tablet or phone with internet access
- Chemical Reactions and Stoichiometry Simulation

### Safety

No specific safety precautions need to be observed for this activity.

### Teacher Notes

- This simulation should be used after students have learned about types of chemical reactions, how to balance an equation and how to solve a stoichiometry problem. It would be beneficial for students to use this simulation as a review tool for a unit test or exam.
- Each quiz is made up of 5 questions, each containing 3 parts. Each part of a question is worth 1 point, for a total of 15 possible points.
- Each of the quiz questions will follow the same pattern: first classify the reaction type, then balance the equation, and finally solve a stoichiometry problem based on the balanced equation.
- The order of 5 questions will be random, so students should not have the same order of questions as a peer.
- There are 20 possible questions that could appear in the quiz, so students can complete the quiz multiple times without being presented with the same problem.
- The types of chemical reactions presented in the quiz can be categorized as one of the following reaction types: synthesis, decomposition, single replacement, double replacement or combustion.
- The conversions required in the stoichiometry problems in this quiz vary between questions.
- There is no student handout associated with this simulation since the student will be given instructions, and will answer both multiple choice and free-response questions using the simulation interface.
- The simulation can be found at either of the following links (note that students can access the simulation without an AACT login):
- Download the teacher guide to access the complete answer key for this simulation.