Looking for an engaging, hands-on method to introduce balancing equations? By using these colorful manipulatives, students are able to visualize the meaning of coefficients and gain a better understanding of why balancing a chemical equation is necessary. Students add the appropriate number of cutouts until the equation is balanced. Then, they record the final chemical equation and a visual representation in the data section of their lab. Students will balance a total of 7 chemical equations. In their analysis, students discuss the connection between the law of conservation of mass and balancing equations.
Check out more resources at the Ysci store
With what standard does this resource align?
This resource will support students in moving towards the mastery of the Next Generation Science Standards.
NGSS MS-PS1-5: Develop and use a model to describe how the total number of atoms does not change in a chemical reaction and thus mass is conserved.
NGSS HS-PS1-7: Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction.
What type of preparation is involved?
You can choose to have students cut out the different components in their small groups to save on prep time for you; however, I find it more productive to create 1 set for each group prior to class. If you put in the time up front and print them on cardstock, you will have a complete set of manipulatives for years to come.
How do I use this resource?
Small group work
1 student copy of the lab
1 set of manipulatives (molecules, coefficients and equations). Note: there are a handful of extras included in the set so students do not have the exact number of atoms and molecules.
1 teacher answer key
Connect with me
Copyright © 2019 Ysci
By purchasing this file, you agree to the following terms. All rights reserved by author. This product is to be used by the original downloader only for personal or classroom use only. Copying for more than one teacher, classroom, department, school, or school system is prohibited. Additional licenses can be purchased at a discount for others to use in your department. This entire document, or any parts within, may not be reproduced or displayed for public viewing. You may NOT electronically post this product online including to teacher blogs, classroom websites, school networks or Google Classroom. Failure to comply is a copyright infringement and a violation of the Digital Millennium Copyright Act (DMCA).