Lab - Great Steel Wools of Fire (A Conservation of Mass Investigation)

Lab - Great Steel Wools of Fire (A Conservation of Mass Investigation)
Lab - Great Steel Wools of Fire (A Conservation of Mass Investigation)
Lab - Great Steel Wools of Fire (A Conservation of Mass Investigation)
Lab - Great Steel Wools of Fire (A Conservation of Mass Investigation)
Lab - Great Steel Wools of Fire (A Conservation of Mass Investigation)
Lab - Great Steel Wools of Fire (A Conservation of Mass Investigation)
Lab - Great Steel Wools of Fire (A Conservation of Mass Investigation)
Lab - Great Steel Wools of Fire (A Conservation of Mass Investigation)
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Product Description
This 2-page combustion of steel wool lab is designed to be a short activity that gives students experience with performing a combustion reaction and collecting data to support the law of conservation of mass.

To perform the activity, students measure the mass of a small piece of steel wool and record it. Next, they pull the steel wool apart to maximize the surface area in contact with the air. Then, students combust the steel wool using a Bunsen burner, measure the mass of the product and record it. Finally, students compare the mass before and after the chemical change. If the lab is conducted carefully, students will find that the combusted steel wool will increase in mass as it forms iron oxide. This really surprises them as it appears to violate the law of conservation of mass!

The post-lab analysis questions asks students to describe the reactants and products of the combustion reaction, list 2-3 signs that a chemical change took place, explain why the mass may have increased during the reaction, and finally, draw a correct ionic bond diagram to illustrate the formation of iron oxide.


Product Contents:

Page 1 introduces the concept of combustion reactions and creation of metal oxides from pure metals, as well as stating the problem, materials, and procedure.

Page 2 features a blank data table and 4 analysis questions.


Included Answer Key:

Pages 3 - 4 are full, color-coded answer keys for the hypotheses section and all analysis questions, as well as providing sample student data.


Downloadable in 2 Formats:

This worksheet comes in 2 formats: a static PDF document and fully-editable WORD document

Download the full PDF preview to see EXACTLY what you are getting!


Relevant NGSS Core Idea(s) Addressed by This Product:

NGSS - MS-PS1.A
Physical Science - Matter and its Interactions - Structure and Properties of Matter

NGSS - MS-PS1.B
Physical Science - Matter and its Interactions - Chemical Reactions


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Copyright © Douglas Enns. All rights reserved by author. This product is to be used by the original downloader only. Copying for more than one teacher, classroom, department, school, or school system is prohibited. This product may not be distributed or displayed digitally for public view. Failure to comply is a copyright infringement and a violation of the Digital Millennium Copyright Act (DMCA). Clipart and elements found in this document are copyrighted and cannot be extracted and used outside of this file without permission or license. Intended for classroom and personal use ONLY.
Total Pages
4 pages
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