If you are using it for one of your Boy Scout requirements, see your handbook for a list of things you can teach. For most recent ILSC, our leader used making a paper airplane to demonstrate the EDGE method. What you teach should fit your audience and any requirement you are trying to fulfill. Reply.
Uses of Thallium. Thallium sulfate, which is odorless and colorless, was used as a rat poison and as an insecticide. This use has been discontinued in some countries, including the USA. Thallium sulfide is used in photocells because its electrical conductivity increases on exposure to infrared light.
1 This is the type of alum that you find in the grocery store for pickling and in baking powder. 2  It is also used in leather tanning, as a flocculant in water purification, as an ingredient in aftershave and as a treatment to fireproof textiles.3  It's chemical formula is KAl(SO 4) 2.otassium alum is used most often, although ammonium alum, ferric alum and soda alum may be used for many of the same purposes. 1  purification of drinking water as a chemical flocculant. 2  in styptic pencil to stop bleeding from minor cuts. 3  adjuvant in vaccines (chemical that enhances immune response).