Apollo GDS Training Books. Description: This book is an integral part of the Introduction to Apollo course. Each chapter corresponds to an online lesson and contains a lesson summary, review questions, emulator exercises, format lists and in some cases supplementary entries not taught in the online lesson.
One source of sea salt is brine, with the salt being produced through evaporation. Table salt can also be produced from rock salt, in which case evaporation is not necessary for processing. The salt crystals are processed to remove any impurities that may be present and allowed to recrystallize.
Salt crystals are made up of ions that are electrically charged atoms or molecules. Every atom has a nucleus made up of protons, all of which have an electrical charge. Atoms also have neutrons but these have no charge at all, they are neutral.