The motion of water molecules in each state of matter is similar to what happens for most substances. Adding energy increases the motion of the molecules and causes them to move further apart. Removing energy decreases the motion of the molecules and causes them to move closer together. But, water does something very unusual when it freezes to become ice. The molecules, which were moving closer and closer together, move further apart as they organize themselves into the open ring pattern shown below for ice. This is why ice expands when it freezes When heating the solid the solid particles have kinetic energy increases. The particles are made to vibrate more. The energy transfer The particle side constantly. Until some of the solid particles with energies higher than the bond between the particles. The solid particles began to move away and more. It was a solid transition into a liquid called fusion (melting) and the temperature change in the solid state to a liquid at a pressure of 1 atmosphere, the melting point.
When the liquid in the container and leave it open for a while. The liquid is evaporated But if I was going to be a passive liquid in a closed container at the same temperature. The molecules of the liquid evaporation will remain in the headspace. In the form of vapor molecules to collide with each other or the walls of the container. The vapor molecules collide with the walls of the container constant force exerted on the vessel. Or pressure occurs in the container. While the liquid becomes a vapor. The volume of liquid is reduced But the volume of steam to the growing pressure of the vapor above the liquid, making it increasingly Meanwhile some steam turns back into a liquid again. At the beginning, the rate of change from liquid to vapor is slow. But the rate of increase of the number of vapor molecules increases more. Transition back and forth between liquid and vapor occurs continuously. The rate of change from liquid to vapor transition rate from vapor to liquid. As a result, the number of molecules that vaporize the number of molecules condensed into a liquid. Currently, the volume and pressure of the fluid is constant. The pressure of the vapor above the liquid at a rate equal to the rate of evaporation, condensation is called. The vapor pressure of the liquid
On a daily basis to find that the water is a good solvent. It is applied in many activities, but there are some substances that do not dissolve in water, such as dry ink or grease stains on his clothes. It has taken some type of liquid soluble substance that can be dissolved in water as the solvent, such as hexane, kerosene, gasoline, alcohol, etc. In conclusion. Some substances soluble in the solvent one. It may not dissolve in solvents other. Therefore, choosing the appropriate solvent can be used in everyday life.