Chemical Glass Etching

School:: Palmetto Ridge High
Subject:: Science
Teacher:: Allison Chapman
Students Impacted:: 750
Grade:: 9-12
Date:: July 1, 2015

Investor

Thank you to the following investor for funding this grant.

Perna-Rose Foundation for Hope - $265.00

Impact to My Classroom

# of Students Impacted: 175

Students learned the difference between chemical and physical changes while studying chemical reactions and creating a memento to take home. Students chose a stencil and the item to chemically etch (small glass or mirror). Students were asked to bring in their own inexpensive piece of glass or allowed to have one that I bought from Good Will or The Dollar Tree Store. Students adhered the reusable stencil on the glass surface they wish to etch and applied masking tape all around the stencil to protect the glass. While wearing gloves and goggles, the students carefully applied the chemical glass etching compound and left it on the surface of the glass for 2-3 minutes. Then the students completely rinsed the etching compound off their item, threw away the used masking tape, kept the reusable stencil and then wash their glass, hands and their stencil before returning the stencil. All the students had a piece of art to take home and were able to discuss the chemical process used to etch the design in the glass. In fact, this lab was so successful, students were happy to help each other and then teach our school’s academic team who purchased more stencils, glass etching compound and glasses from the Dollar Tree Store and made and sold Chemically Etched Glasses to raise money to buy new practice question sets for their club. Over the summer, I will be presenting a talk on Using Writing and A Hands On Lab Experiment To Teach The Difference Between Physical & Chemical Glass Etching. Next year, I will provide all the glass for the students so that all the students can complete the lab experiment on the same day. We have a bunch of new glass from the dollar store left over this year, so I will not need to purchase as much glass next year. I also plan to have the students make candles during a physical change-phase change lab before they chemically etch a glass votive. Then they can place the candles they made in the votive they made and take them home to give as a gift over the holidays.

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Grant Surprise

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Student Collage

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Chemical verses Physical Change Worksheet

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Mason Jar

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A Team Fundraiser

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blue ribbon and first place in her division

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 make or choose a stencil and an item to chemically etch (small glass or mirror).

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 1-2 minutes.

Finally the students will completely rinse the etching compound off their item and wash it and their hands.

Benefits to my students

Students will witness first hand the difference between physically and chemically etching glass. They will also have a piece of art to take home and be able to discuss the chemical process used to etch the design in the glass.

Budget Narrative

We have some of the materials to perform this lab experiment but need more etching compound ($70) and could use more reusable/custom stencils and equipment ($95). Students would be asked to bring in a small glass bottle to etch or we could provide something for them from Goodwill or The Dollar Store. Glass items there can be marked as low as fifty cents a piece when on sale ($100).

Items

#	Item	Cost
1	Glasses/Mirrors	$100.00
2	Etching Compound	$70.00
3	Reusable Stencils ($7 each)	$70.00
4	Exacto Knife to cut custom stencil designs	$15.00
5	Masking Tape	$10.00
	Total:	$265.00

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Chemical Glass Etching

Investor

Impact to My Classroom

Original Grant Overview

Goal

What will be done with my students

Benefits to my students

Budget Narrative

Items

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