اقتباس:
المشاركة الأصلية كتبت بواسطة travel
اسلام
تعرف حاجة عن ده
؟
DESICANTS
TRUE HYDRATE
EFFLORESCENCE
REVESTILITY OF HYDRATION
DELIQUESCENCE
تعريفات وامثلة
 |
EFFLORESCENCE
Definition: the process of losing water of hydration from a hydrate
DELIQUESCENCE
Definition: the process in which a soluble substance picks up water vapor from the air to fom a solution. In order for deliquescence to occur, the vapor pressure of the water in the air must be greater than the vapor pressure of the saturated solution.
DESICCANTS
DEFINITION:A desiccant is a fine grained material which readily absorbs moisture. This is far quicker than simply air drying. The biggest drawback is that the plants become very brittle as a result of this method so you need to take that into consideration. You can used washed fine sand, cornmeal and borax, mixed half and half, or silica gel as your drying medium. Each has good and bad points. If you have to choose only one, silica gel actually works in just a few days and if you choose the horticultural one, it contains a moisture indicator which is blue when dry and turns pink when moisture has been absorbed.
HYDRAYION
A solid compound containing water molecules combined in a definite ratio as an integral part of the crystal.
DEHYDATION
the removal of water. or the loss of two atoms for every oxygen atom(ex:H8O)
علي اد ماقدرت بقي.....وبعدين انتي تقصدي ب
REVESTILITY OF HYDRATION .....REVERSBILITY OF HYDRATION(DEHYDRATION