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Demystify: 

Put the word "corrosive" in front of "chemicals" and the problem goes away.  But you knew what I meant.  And do you really think you need to tell a 74 year old chemist/IH that we are all made of chemicals?    Monona

Monona, your comment about "flying glass and chemicals" really illustrates the crux of the issue.  You realize that "glass" is not in and of itself a hazard, but that "flying glass" is.  At the same time, you use "chemical" as synonymous with hazardous.  This is incorrect.  Not even all chemicals used in lab are hazardous.  The physical universe is made of matter and energy (let's ignore dark matter and dark energy).  ALL matter is chemical.  We try to teach our students to be precise in their language. 

Remember, every Thing that is good for us, that we treasure is a bunch of chemicals.  

Kay Calhoun