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.
Two Methods: Signs Good Form. If you've decided to learn sign language, whether just a little or a lot, the first step is to learn to finger-spell the alphabet. Different regions use different alphabets, some of them using one hand and some of them using two hands.ips. 1  Practice this every day for a while, then go on and try to learn the actual signs to words. 2  It is very important to meet and sign with Deaf people in order to get a feel for how they sign and finger-spell. 3  By interaction, you can more easily learn the accent or dialect used in your area.