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.
introduces the concept of combustion reactions
and creation of metal oxides from pure metals
, as well as stating the problem, materials, and procedure
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
You Might Also Like the Following Unit Resources:
UNIT BUNDLE - Chemical Reactions
PPT - Chemical Reactions
PPT - Jeopardy Game: Chemical Reactions Review
Unit Overview & Key Words - Chemical Reactions Unit
Activity - Physical & Chemical Properties & Changes Sorting Cards (2 Set Bundle)
Worksheet - Physical and Chemical Properties and Changes
Worksheet - What are Chemical Equations?
Worksheet - Balancing Chemical Equations (2 Worksheet Bundle)
Worksheet - What are the Types of Chemical Reactions?
Worksheet - Naming Compounds, Balancing Equations and Classifying Reactions (A Review)
Worksheet - What is Collision Theory?
Lab - Mystery Powders - Physical and Chemical Properties of Matter
Lab - Ziploc Bag Physical and Chemical Changes
Lab - Signs of a Chemical Reaction
Lab - Great Steel Wools of Fire (A Conservation of Mass Investigation)
Lab - Double Displacement Reactions
Lab - Alka-Seltzer Rates of Reaction
Lab - The Disappearing X Rates of Reaction Activity
Lab - The Disappearing X Rates of Reaction Activity (Virtual Lab)
Quiz - Balancing Chemical Equations (4 Quiz Bundle)
Quiz - Types of Chemical Reactions
Quiz - Collision Theory
Unit Review - Chemical Reactions
Unit Test - Chemical Reactions
Connect with More Science With Mr. Enns Resources:
Be sure to follow my TpT store by clicking on the Follow Me
next to my seller picture to receive notifications of new products and upcoming sales.
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.