Is glass etching a physical or chemical change?

Subject: Is glass etching a physical or chemical change?

Date: Fri Nov 20 14:01:56 2009
Posted by Devon
Grade level: teacher/prof School: Desert Willow Family School
City: Albuquerque State/Province: NM Country: USA
Area of science: Chemistry
ID: 1258750916.Ch

Message:


I have an upcoming lab with students where they will be etching glass using a 
commercial etching paste, Armour Etch.  I'm finding conflicting info on the 
web as to whether this is a chemical or physical change in the glass.  What if 
we were to sandblast the glass?
Thanks,
Devon
devondeyarman@yahoo.com

Re: Is glass etching a physical or chemical change?

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