This fact sheet answers the most frequently asked health questions (FAQs) about perchlorates. For more information, call the ATSDR Information Center at 1-800-232-4636. This fact sheet is one in a series of summaries about hazardous substances and their health effects.erchlorates are colorless salts that have no odor. There are five perchlorate salts that are manufactured in large amounts: magnesium perchlorate, potassium perchlorate, ammonium perchlorate, sodium perchlorate, and lithium perchlorate. Perchlorate salts are solids that dissolve easily in water.
Instructions. 1  1. First of all, start with few and easy sign languages. Introducing too many signs at one time will be a useless effort. 2  2. Introduce the signs to your children in such a way as âyou say the word.â It helps in associating the word with the sign language.
Ten-year-old Yesenia Diosdado is revising an English assignment. But it turns out the language that's proven to be most valuable is the one she knows that's silent. Yesenia's mother started teaching her sign language when she was just a year old. I have always explained to me kids -- even if you may never use it -- the importance of sign language is everywhere, her mother Susan Mulidore told CBS News. A little over a week ago Yesenia found out her mother was right all along.