STEAM: Chemical Glass Etching - Chemical or Physical Change?
- School:
- Palmetto Ridge High
- Subject:
- Stem
- Teacher:
- Allison Chapman
- Curtis F. Chapman, Ph.D.
- Students Impacted:
- 1600
- Grade:
- 9-12
- Date:
- August 25, 2019
Investor
Thank you to the following investor for funding this grant.
Woodward, Pires & Lombardo, PA - $215.00
Original Grant Overview
Goal
Students will learn the difference between chemical and physical changes while studying chemical reactions and creating a memento to take home.
What will be done with my students
Students will watch a short video on the use of sand blasting to etch glass and then compare it to chemical glass etching.
They will then choose a stencil and a glass item to chemically etch.
Students will adhere the stencil on the glass surface they wish to etch and apply masking tape all around the stencil to protect the glass.
While wearing gloves and goggles, the students will carefully apply the etching compound and leave it on the surface for 2-3 minutes.
Finally, the students will completely rinse the etching compound off their item, wash it off, and write about the process in their interactive journals.
Benefits to my students
Students will observe the difference between physically and chemically etching glass first hand. They will be able to discuss the chemical process used to etch the design in the glass. Not to mention, they will have a piece of art to take home.
Budget Narrative
We have all the chemicals and some of the materials to perform this lab experiment but need more glass and reusable/custom stencils ($200). Special thanks to Dr. Raabe, Chef Wilkey and The Chapman Family for donations of cash and glass in the past.
Items
| # | Item | Cost |
|---|---|---|
| 1 | Glass Votive Holders | $172.00 |
| 2 | Reusable Stencils ($7 each) | $28.00 |
| 3 | chemical etching compound | $0.00 |
| 4 | Exacto Knife to cut custom stencil designs | $0.00 |
| 5 | Masking Tape | $10.00 |
| 6 | bulletin board posters describing the experiment | $0.00 |
| 7 | tax | $12.60 |
| Total: | $222.60 |
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