The following drugs, medications, substances or toxins are some of the possible causes of Eyelid pain as a symptom. Always advise your doctor of any medications or treatments you are using, including prescription, over-the-counter, supplements, herbal or alternative treatments. 1  Lumigan.
Some substances dissolve when you mix them with water. When a substance dissolves, it looks like it disappears. But in fact it has just mixed with the water to make a transparent (see-through) liquid called a solution. When you mix sugar with water, the sugar dissolves to make a transparent solution. Salt dissolves in water too. Heat can help some substances dissolve faster in water. Salt, for example, will dissolve quicker in hot water than in cold water. Substances that dissolve in water are called soluble substances.
Larger distances between particles weakens the forces of attraction between. them. When the forces of attraction ar e weak enough, the distance between the. particles increases markedly and the phase changes. As a result, a solid melts. and a liquid evaporates. The reverse happens when a substance cools. As the. particles slow down and the collisions weaken, the particles move closer.