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.
Steps. 1  1. Get the other person's attention before attempting to talk or communicate. 2  2. Stay in their field of vision. 3  3. Speak your greeting in a normal voice and tone.  4. Establish the gist of what you are going to talk 1  about. 5. Make eye contact.  6. Use gestures and visual 1  cues. 7. Be polite.  8. Learn sign language. For full communication with deaf people who are more comfortable signing than speaking, learn sign language. Sign languages are natural languages, with their own grammar and syntax; for example, the English phrase I give to you is one word (or sign) in American Sign Language (ASL).