I have wondered for some time if the plastic slides in Dansco books (9 holes per page) will do any damage to my chips. Don't know if they contain plastizers (sic) or pcv. I'd rather not burn one to determine halogen color!
I followed the chem discussion in this BB. I haven't taken a chem class since 1958 but I do remember flame tests. I can also still compute grams per mol(?) I don't remember why, but what the heck...it was for a grade.